Chapter 23 Review Questions

June 21, 2018 | Author: Ron Bloker | Category: Alkene, Nucleic Acids, Functional Group, Carbohydrates, Amino Acid
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General Chemistry: Atoms First, 2e (McMurry and Fay) Chapter 23 Organic and Biological Chemistry 23.1 Multiple Choice Questions 1) Which of the following statements about carbon is false? A) Carbon compounds have covalent bonds. B) Carbon compounds can have multiple bonds. C) Carbon is tetravalent. D) Carbon uses sp2 hybrids to form tetrahedral structures. Answer: D Diff: 1 Topic: Section 23.1 Organic Molecules and Their Structures: Alkanes 2) The most important characteristic of carbon atoms for forming organic molecules is A) ability to bond together to form long chains. B) ability to form multiple covalent bonds. C) use of hybrid orbitals. D) all of the above are important Answer: D Diff: 1 Topic: Section 23.1 Organic Molecules and Their Structures: Alkanes 3) Another term for alkanes is A) alkenes. B) alkynes. C) saturated hydrocarbons. D) unsaturated hydrocarbons. Answer: C Diff: 1 Topic: Section 23.1 Organic Molecules and Their Structures: Alkanes 4) Compounds that have the same formula but different molecular structures are called A) isoelectronic. B) isomers. C) isotones. D) isotopes. Answer: B Diff: 1 Topic: Section 23.1 Organic Molecules and Their Structures: Alkanes 1 Copyright © 2014 Pearson Education, Inc. 5) Which of the following statements about isomers is false? A) All alkanes have branched chain isomers. B) As the number of carbon atoms increase in a compound, so do the number of possible isomers. C) Isomers have different physical properties. D) Isomers have the same formula but different molecular structures. Answer: A Diff: 1 Topic: Section 23.1 Organic Molecules and Their Structures: Alkanes 6) How many isomers are there for C5H12 ? A) 3 B) 4 C) 5 D) 6 Answer: A Diff: 2 Topic: Section 23.1 Organic Molecules and Their Structures: Alkanes Algo. Option: algorithmic 7) Which is the condensed structure of a straight-chain hydrocarbon? A) I B) II C) III D) IV Answer: A Diff: 2 Topic: Section 23.1 Organic Molecules and Their Structures: Alkanes 2 Copyright © 2014 Pearson Education, Inc. 8) Which condensed structure below representing an alkane is not correct? A) CH3CH2CH3 B) C) CH3CH2CH2CH3 D) Answer: B Diff: 2 Topic: Section 23.1 Organic Molecules and Their Structures: Alkanes 9) Which of the following condensed structures represent the same molecule? A) I and II B) II and IV C) III and IV D) II and III Answer: C Diff: 2 Topic: Section 23.1 Organic Molecules and Their Structures: Alkanes 10) Which of the structures below are identical? A) I and II B) II and III C) III and IV D) I and IV Answer: B Diff: 2 Topic: Section 23.1 Organic Molecules and Their Structures: Alkanes 3 Copyright © 2014 Pearson Education, Inc. 11) Some of the products from reaction of bromine and propane are shown below. (The hydrogen atoms are not shown in the structures.) How many are identical structures? A) 2 B) 3 C) 4 D) All are isomers of each other. Answer: C Diff: 2 Topic: Section 23.1 Organic Molecules and Their Structures: Alkanes 12) Which one of the structures below is different from the other three? A) I B) II C) III D) IV Answer: A Diff: 2 Topic: Section 23.1 Organic Molecules and Their Structures: Alkanes 13) Which of the following statements is false regarding functional groups? A) The chemical properties of the functional group dictate the chemistry of the larger molecule. B) Each functional group has a characteristic chemical behavior. C) A functional group consists of an atom or a group of atoms that is part of a larger molecule. D) A functional group consists of only carbon and hydrogen atoms. Answer: D Diff: 1 Topic: Section 23.2 Families of Organic Compounds: Functional Groups 4 Copyright © 2014 Pearson Education, Inc. 14) Identify the functional group: A) alcohol B) amine C) amide D) ester Answer: C Diff: 1 Topic: Section 23.2 Families of Organic Compounds: Functional Groups 15) Identify the functional group: A) aldehyde B) ketone C) ester D) ether Answer: D Diff: 1 Topic: Section 23.2 Families of Organic Compounds: Functional Groups 5 Copyright © 2014 Pearson Education, Inc. 16) Which functional group below represents a carboxylic acid? A) B) C) D) Answer: D Diff: 1 Topic: Section 23.2 Families of Organic Compounds: Functional Groups 17) Which functional group below represents a ketone? A) B) C) D) Answer: B Diff: 1 Topic: Section 23.2 Families of Organic Compounds: Functional Groups 6 Copyright © 2014 Pearson Education, Inc. 18) Which functional group below represents an aldehyde? A) B) C) D) Answer: C Diff: 1 Topic: Section 23.2 Families of Organic Compounds: Functional Groups 19) The functional groups in the molecule below are H2NCH2CO2H A) alkane, amide, and carboxylic acid. B) alkane, amine, and carboxylic acid. C) alkane, amide, ketone, and alcohol. D) alkane, amine, ketone, and alcohol. Answer: B Diff: 2 Topic: Section 23.2 Families of Organic Compounds: Functional Groups 20) Which one of the following compounds is an alcohol? A) CH3OCH3 B) CH3COCH3 C) (CH3)2CHOH D) CH3CO2H Answer: C Diff: 2 Topic: Section 23.2 Families of Organic Compounds: Functional Groups 7 Copyright © 2014 Pearson Education, Inc. 21) The functional groups in the molecule below are O O HCCH2 COCH3 A) alkane, aldehyde, and ester. B) alkane, aldehyde, ketone, and ether. C) alkane, carboxylic acid, and ester. D) alkane, ketone, and ester. Answer: A Diff: 2 Topic: Section 23.2 Families of Organic Compounds: Functional Groups 22) Which statement below is false concerning nomenclature rules for alkanes? A) Carbon atoms are numbered starting with the atom farthest from the branching point. B) Each branching group is assigned a number referring to its point of attachment in the parent chain. C) The name of the alkane is written as a single word. D) The parent name is taken from the longest continuous chain of carbon atoms. Answer: A Diff: 2 Topic: Section 23.3 Naming Organic Compounds 23) An alkyl group is named for the part of the alkane group that remains after a ________ is removed. A) C atom B) CH3 group C) CH2 group D) H atom Answer: D Diff: 1 Topic: Section 23.3 Naming Organic Compounds 24) If the point of attachment to an alkane is by the middle carbon in a propyl group, the group is called A) isopropyl. B) n-propyl. C) sec-propyl. D) tert-propyl. Answer: A Diff: 2 Topic: Section 23.3 Naming Organic Compounds 8 Copyright © 2014 Pearson Education, Inc. 25) What is the name for the alkyl group: A) isobutyl B) tert-butyl C) tributyl D) trimethyl Answer: B Diff: 2 Topic: Section 23.3 Naming Organic Compounds 26) What is the IUPAC name for the following compound? A) heptane B) 3, 3-dimethylpentane C) 2, 2-dimethyl-2-ethylpropane D) 2, 2-diethylpropane Answer: B Diff: 3 Topic: Section 23.3 Naming Organic Compounds 27) What is the IUPAC name for the continuous carbon chain of C10H22? A) decane B) dipentane C) tenalkane D) tenane Answer: A Diff: 2 Topic: Section 23.3 Naming Organic Compounds 9 Copyright © 2014 Pearson Education, Inc. 28) What is the IUPAC name for the following compound: A) 1, 3-dimethyl-1-ethylhexane B) 4, 6-dimethyl-6-ethylhexane C) 3, 5-dimethyloctane D) sec-hexylbutane Answer: C Diff: 3 Topic: Section 23.3 Naming Organic Compounds 29) Which of the following compounds is 5-ethyl-4-isopropyl-2-methylnonane? A) B) C) D) Answer: D Diff: 4 Topic: Section 23.3 Naming Organic Compounds 10 Copyright © 2014 Pearson Education, Inc. 30) Which name is not correct? A) 1, 2-dichloropentane B) 2, 3-dimethylbutane C) 2-ethylbutane D) 4-propylheptane Answer: C Diff: 3 Topic: Section 23.3 Naming Organic Compounds 31) Which name is not correct? A) 2, 2-dimethylbutane B) 2, 3-dimethylpentane C) 2, 3, 3-trimethylbutane D) 2, 3, 3-trimethylpentane Answer: C Diff: 3 Topic: Section 23.3 Naming Organic Compounds 32) The names of compounds with carbon-carbon double bonds contain the suffix A) -ane. B) -ene. C) -yne. D) -one. Answer: B Diff: 1 Topic: Section 23.4 Unsaturated Organic Compounds: Alkenes and Alkynes 33) Which class of hydrocarbons has the general formula CnH2n+2? A) alkanes B) alkenes C) alkynes D) cylcloalkanes Answer: A Diff: 1 Topic: Section 23.3 Naming Organic Compounds 34) What class of hydrocarbons has the general formula CnH2n? A) alkanes B) alkenes and cycloalkanes C) alkynes D) aromatics Answer: B Diff: 2 Topic: Section 23.4 Unsaturated Organic Compounds: Alkenes and Alkynes 11 Copyright © 2014 Pearson Education, Inc. 35) What is the hybridization of the carbon in (CH3)2C =CHC N indicated by the asterisk (*)? A) sp B) sp2 C) sp3 D) dsp3 Answer: B Diff: 2 Topic: Section 23.4 Unsaturated Organic Compounds: Alkenes and Alkynes 36) Which compound is a saturated hydrocarbon? A) benzene B) cyclohexene C) 2-methylpentane D) propylene Answer: C Diff: 2 Topic: Section 23.4 Unsaturated Organic Compounds: Alkenes and Alkynes Algo. Option: algorithmic 37) What is the molecular geometry around the carbon in (CH3)2C=CHC N indicated by the asterisk (*)? A) linear B) trigonal planar C) trigonal pyramidal D) tetrahedral Answer: A Diff: 2 Topic: Section 23.4 Unsaturated Organic Compounds: Alkenes and Alkynes 38) Which of the molecules shown below are unsaturated? (1) CH3CH2CH2CH(CH3)2 (2) CH3CH=CHCH(CH3)2 (3) HC CCH2CH(CH3)2 A) All are unsaturated. B) Only (2) and (3) are unsaturated. C) Only (2) is unsaturated. D) Only (3) is unsaturated. Answer: B Diff: 2 Topic: Section 23.4 Unsaturated Organic Compounds: Alkenes and Alkynes 12 Copyright © 2014 Pearson Education, Inc. 39) Which of the following statements about cis-trans isomers is not correct? A) Conversion between cis- and trans-isomers occurs easily by rotation around the double bond. B) In the trans- isomer, the groups of interest are on opposite sides across the double bond. C) In the cis- isomer, the groups of interest are on the same side of the double bond. D) There are no cis-trans isomers in alkynes. Answer: A Diff: 2 Topic: Section 23.4 Unsaturated Organic Compounds: Alkenes and Alkynes 40) Which one of the following molecules can rotate freely around its carbon-carbon bond? A) acetylene B) cyclopropane C) ethane D) ethylene Answer: C Diff: 3 Topic: Section 23.4 Unsaturated Organic Compounds: Alkenes and Alkynes 41) How many geometrical and structural isomers are there of butene? A) 3 B) 4 C) 5 D) 6 Answer: A Diff: 3 Topic: Section 23.4 Unsaturated Organic Compounds: Alkenes and Alkynes 42) Which compound will have the largest dipole moment? A) cis-1, 2-dichloroethylene B) trans-1, 2-dichloroethylene C) tetrabromoethylene D) tetrachloroethylene Answer: A Diff: 4 Topic: Section 23.4 Unsaturated Organic Compounds: Alkenes and Alkynes 43) Which of the following is not a geometric (cis-trans) isomer? A) 1, 1-dichloro-1-butene B) 1, 2-dichloro-1-butene C) 2-butene D) 2-chloro-2-butene Answer: A Diff: 3 Topic: Section 23.4 Unsaturated Organic Compounds: Alkenes and Alkynes 13 Copyright © 2014 Pearson Education, Inc. 44) Which of the following is trans-2-butene? (Only bonds are shown in the skeletal structures below; the carbon and hydrogen atoms are deleted.) A) structure a B) structure b C) structure c D) none of these Answer: B Diff: 2 Topic: Section 23.4 Unsaturated Organic Compounds: Alkenes and Alkynes 45) What is the name of the following structure? A) cis-1-ethyl-2-chloroethane B) cis-1-chloro-1-butene C) trans-1-chloro-1-butene D) trans-1-chloro-2-ethylethane Answer: C Diff: 3 Topic: Section 23.4 Unsaturated Organic Compounds: Alkenes and Alkynes 14 Copyright © 2014 Pearson Education, Inc. 46) What is the name of the following structure? A) tert-butylethyne B) 3, 3-dimethyl-1-pentyne C) 3-ethyl-3-methyl-1-butyne D) trans-ethylmethylbutyne Answer: B Diff: 3 Topic: Section 23.4 Unsaturated Organic Compounds: Alkenes and Alkynes 47) Which of the following is a correct name for an alkyne? A) 3-methyl-2-pentyne B) 5-methyl-3-pentyne C) 2, 2-dimethyl-4-pentyne D) 3, 3-dimethyl-1-pentyne Answer: D Diff: 4 Topic: Section 23.4 Unsaturated Organic Compounds: Alkenes and Alkynes 48) Which compound will exhibit cis-trans isomerism? A) 1, 2-dichloroethane B) 1, 2-dichloroethene C) dichloroethyne D) ethylene Answer: B Diff: 3 Topic: Section 23.4 Unsaturated Organic Compounds: Alkenes and Alkynes 49) The most important synthetic chemical reactions that alkenes and alkynes undergo are called A) addition reactions. B) combustion reactions. C) photochemical halogenation reactions. D) substitution reactions. Answer: A Diff: 2 Topic: Section 23.4 Unsaturated Organic Compounds: Alkenes and Alkynes 15 Copyright © 2014 Pearson Education, Inc. 50) Name the product of hydrogenation of trans-2-pentene. A) pentane B) cis-2-pentene C) trans-2-pentane D) none of these Answer: A Diff: 4 Topic: Section 23.4 Unsaturated Organic Compounds: Alkenes and Alkynes 51) Hydrogenation of vegetable oils converts them into what type of molecule? A) esters B) ethers C) polymers D) saturated fats Answer: D Diff: 2 Topic: Section 23.4 Unsaturated Organic Compounds: Alkenes and Alkynes 52) Name the product obtained from the addition of bromine to 3-methyl-1-butene. A) 1, 1-dibromobutane B) 1, 2-dibromo-3-methylbutane C) 1, 2-dibromopentane D) trans-1, 2-dibromobutene Answer: B Diff: 4 Topic: Section 23.4 Unsaturated Organic Compounds: Alkenes and Alkynes 53) What is the product when pure water and ethene are mixed? A) an alcohol B) a carboxylic acid C) an ether D) no reaction occurs Answer: D Diff: 3 Topic: Section 23.4 Unsaturated Organic Compounds: Alkenes and Alkynes 54) In the addition reaction of water and propene in an acidic solution, the product is A) an alcohol. B) a carboxylic acid. C) an ether. D) a ketone. Answer: A Diff: 3 Topic: Section 23.4 Unsaturated Organic Compounds: Alkenes and Alkynes 16 Copyright © 2014 Pearson Education, Inc. 55) The cycloalkane represented by a square is called ________ and has the molecular formula ________. A) cyclopropane, C3H6 B) cyclopropane, C3H8 C) cyclobutane, C4H4 D) cyclobutane, C4H8 Answer: D Diff: 3 Topic: Section 23.5 Cyclic Organic Compounds 56) Which name is not correct? A) 1, 1 dimethylcyclobutane B) 1, 2-dimethylcyclobutane C) 1, 3-dimethylcyclohexane D) 1, 4-dimethylcyclopentane Answer: D Diff: 3 Topic: Section 23.5 Cyclic Organic Compounds 57) A molecule that has the molecular formula A) 3-methlycyclopentene. B) cyclohexane. C) hexane. D) 2-hexene. Answer: A Diff: 3 Topic: Section 23.5 Cyclic Organic Compounds is 58) What are the C–C–C bond angles in cyclopropane and cyclohexane? A) 60° in both molecules B) 60° in cyclopropane and 109.5° in cyclohexane C) 60° in cyclopropane and 120° in cyclohexane D) 109.5° in both molecules Answer: B Diff: 2 Topic: Section 23.5 Cyclic Organic Compounds 59) Which compound is not an isomer of the other three? A) cyclohexane B) 1, 2-dimethylcyclobutane C) 1, 2-dimethylcyclopropane D) methylcyclopentane Answer: C Diff: 3 Topic: Section 23.5 Cyclic Organic Compounds 17 Copyright © 2014 Pearson Education, Inc. 60) Which of the following statements about cycloalkanes is true? A) The bonds in cyclopropane and cyclobutane are weaker than other cycloalkanes. B) Cycloalkanes are also called "acyclic" compounds. C) Cyclopropane has 109° bond angles. D) Most cycloalkanes are planar molecules. Answer: A Diff: 2 Topic: Section 23.5 Cyclic Organic Compounds 61) Which of the following statements about benzene is true? Benzene A) contains 3 long bonds and 3 short bonds. B) is a puckered, six-membered ring. C) is unusually stable because of delocalized pi electrons. D) readily undergoes addition reactions. Answer: C Diff: 2 Topic: Section 23.6 Aromatic Compounds 62) What type of hybridization does a carbon atom have in a six-membered aromatic ring? A) sp B) sp2 C) sp3 D) sp3d Answer: B Diff: 1 Topic: Section 23.6 Aromatic Compounds 63) Which reaction is not characteristic of aromatic compounds? A) addition B) halogenation C) nitration D) sulfonation Answer: A Diff: 2 Topic: Section 23.6 Aromatic Compounds 18 Copyright © 2014 Pearson Education, Inc. 64) Which structures represent the same dibromobenzene compound? A) I and IV B) II and III C) I, II, and III D) All structures are identical. Answer: B Diff: 1 Topic: Section 23.6 Aromatic Compounds 65) Which structure is meta-dibromobenzene? A) structure I B) structure II C) structure III D) structure IV Answer: A Diff: 2 Topic: Section 23.6 Aromatic Compounds 19 Copyright © 2014 Pearson Education, Inc. 66) Which structure is para-dibromobenzene? A) structure I B) structure II C) structure III D) structure IV Answer: D Diff: 2 Topic: Section 23.6 Aromatic Compounds 67) Which of the following statements about amines is not correct? Amines are A) bases (proton acceptors). B) converted to ammonium salts by reaction with HCl. C) organic derivatives of ammonia. D) very water soluble. Answer: D Diff: 2 Topic: Section 23.7 Alcohols, Ethers, and Amines 68) The boiling point of 1-propanol should be ________ than the boiling point of methyl ethyl ether. A) higher than B) lower than C) the same as D) cannot be determined Answer: A Diff: 3 Topic: Section 23.7 Alcohols, Ethers, and Amines 69) What is the proper name for (CH3)2CHCH(OH)CH3? A) isopropanol B) isopentanol C) 2-methylpentanol D) 3-methyl-2-butanol Answer: D Diff: 3 Topic: Section 23.7 Alcohols, Ethers, and Amines 20 Copyright © 2014 Pearson Education, Inc. 70) "Wood alcohol" is the common name for A) methanol. B) ethanol. C) 2-propanol. D) 1, 2-ethanediol. Answer: A Diff: 1 Topic: Section 23.7 Alcohols, Ethers, and Amines 71) "Rubbing alcohol" is the common name for A) methanol. B) ethanol. C) 2-propanol. D) 1, 2-ethanediol. Answer: C Diff: 1 Topic: Section 23.7 Alcohols, Ethers, and Amines 72) "Glycerol" is the common name for A) ethanol. B) 2-propanol. C) 1, 2-ethanediol. D) 1, 2, 3-propanetriol. Answer: D Diff: 2 Topic: Section 23.7 Alcohols, Ethers, and Amines 73) Which of the following compounds is most soluble in water? A) decanol B) dimethyl ether C) ethane D) ethanol Answer: D Diff: 2 Topic: Section 23.7 Alcohols, Ethers, and Amines 74) How many ether isomers have the formula C4H10O? A) 2 B) 3 C) 4 D) 5 Answer: B Diff: 3 Topic: Section 23.7 Alcohols, Ethers, and Amines 21 Copyright © 2014 Pearson Education, Inc. 75) What type of compound contains the -NH2 functional group? A) alcohol B) amine C) carboxylic acid D) ether Answer: B Diff: 1 Topic: Section 23.7 Alcohols, Ethers, and Amines 76) Which of the following is the most soluble in water? A) trimethylammonium chloride B) methane C) trimethyl amine D) dimethyl ether Answer: A Diff: 3 Topic: Section 23.7 Alcohols, Ethers, and Amines 77) What is the common name for benzeneamine? A) aniline B) toluene C) xylene D) phenol Answer: A Diff: 2 Topic: Section 23.7 Alcohols, Ethers, and Amines 78) The reaction of methylamine with HCl produces A) methyl ammonium chloride. B) dimethylamine and ammonium chloride. C) methanol and ammonium chloride. D) methanol and chloramine. Answer: A Diff: 3 Topic: Section 23.7 Alcohols, Ethers, and Amines 22 Copyright © 2014 Pearson Education, Inc. 79) The C-C=O bond angle in acetic acid, shown below, is closest to O CH3C–OH A) 90°. B) 109.5°. C) 120°. D) 180°. Answer: C Diff: 2 Topic: Section 23.8 Carbonyl Compounds 80) The H-C-H bond angles in acetic acid, shown below, are closest to O CH3C–OH A) 90°. B) 109.5°. C) 120°. D) 180°. Answer: B Diff: 2 Topic: Section 23.8 Carbonyl Compounds 81) What is the common name for the simplest ketone, propanone? A) acetal B) acetone C) carbanone D) formalin Answer: B Diff: 1 Topic: Section 23.8 Carbonyl Compounds 82) Which of the following molecules is the most highly oxidized? A) acetaldehyde B) acetic acid C) ethanol D) 1, 2-ethanediol Answer: B Diff: 3 Topic: Section 23.8 Carbonyl Compounds 23 Copyright © 2014 Pearson Education, Inc. 83) Which of the following does not contain a carbonyl group? A) an alcohol B) an aldehyde C) an amide D) an ester Answer: A Diff: 2 Topic: Section 23.8 Carbonyl Compounds 84) Which one of the following does not contain a polar carbonyl group? A) an amine B) a carboxylic acid C) an ester D) a ketone Answer: A Diff: 2 Topic: Section 23.8 Carbonyl Compounds 85) Which of the following pairs have the most similar chemical properties? A) alkanes and carboxylic acids B) alkenes and aromatics C) amines and esters D) ketones and aldehydes Answer: D Diff: 2 Topic: Section 23.8 Carbonyl Compounds 86) Which one of the following behaves like an acid? A) CH3COCH3 B) (CH3)2NH C) C2H5OH D) C2H5COOH Answer: D Diff: 1 Topic: Section 23.8 Carbonyl Compounds 87) How many grams of Ca(OH)2 are needed to neutralize 5.00 g of 3-methylbutanoic acid? A) 1.81 g B) 2.10 g C) 3.63 g D) 4.20 g Answer: A Diff: 3 Topic: Section 23.8 Carbonyl Compounds 24 Copyright © 2014 Pearson Education, Inc. 88) What type of compound is formed when a carboxylic acid reacts with an alcohol? A) an aldehyde B) an amide C) an aromatic D) an ester Answer: D Diff: 3 Topic: Section 23.8 Carbonyl Compounds 89) What is the name of the product formed by the reaction of propanoic acid with ethanol? A) ethyl propanoate B) pentanone C) pentyl ester D) ethylpropylketone Answer: A Diff: 4 Topic: Section 23.8 Carbonyl Compounds 90) When propyl ethanoate is hydrolyzed the products are A) 1-propanol and acetic acid. B) propanone and ethanol. C) 2-propanol and propanoic acid. D) methanal and ethanol. Answer: A Diff: 4 Topic: Section 23.8 Carbonyl Compounds 91) What are the products of a hydrolysis reaction of an ester? A) an alcohol and an alkane B) a carboxylic acid and an alcohol C) an ether and an alkene D) a ketone and an aldehyde Answer: B Diff: 3 Topic: Section 23.8 Carbonyl Compounds 25 Copyright © 2014 Pearson Education, Inc. 92) Which ester below formed propanoic acid and isopropyl alcohol by hydrolysis reaction with water? A) B) C) D) Answer: A Diff: 4 Topic: Section 23.8 Carbonyl Compounds 93) Which statement about the differences between an amine and an amide is not correct? A) Amides act as proton acceptors while amines do not. B) Amines are basic and amides are neutral. C) Amines form ammonium salts when treated with acid; amides do not. D) The lone pair of electrons on amides is held more tightly than the lone pair on an amine. Answer: A Diff: 3 Topic: Section 23.8 Carbonyl Compounds 94) The reaction of an amine and a carboxylic acid produces what kind of compound? A) alcohol B) amide C) ester D) ketone Answer: B Diff: 3 Topic: Section 23.8 Carbonyl Compounds 26 Copyright © 2014 Pearson Education, Inc. 95) What is the name of the product formed by the reaction of butanoic acid with methylamine? A) N-methylbutamide B) N-methylbutanamide C) pentanone D) pentyl amine Answer: B Diff: 4 Topic: Section 23.8 Carbonyl Compounds 96) Which one of the following behaves like a base? A) CH3CONHCH3 B) (CH3)2NH C) C2H5CONHCH3 D) All of the above are bases. Answer: B Diff: 3 Topic: Section 23.8 Carbonyl Compounds 97) What are the products of acid-catalyzed hydrolysis reaction of amides and water? A) an alcohol and an alkane B) an amine and a ketone C) a carboxylic acid and an amine salt D) an ester and an ether Answer: C Diff: 3 Topic: Section 23.8 Carbonyl Compounds 98) Which one of the following molecules is the most polar? A) acetaldehyde B) acetic acid C) ethane D) ethylene Answer: B Diff: 3 Topic: Section 23.8 Carbonyl Compounds Algo. Option: algorithmic 27 Copyright © 2014 Pearson Education, Inc. Shown are ball-and-stick (1) and space-filling (2) models of methane. 99) What is the H–C–H bond angle? A) 90° B) 109.5° C) 120° D) 180° Answer: B Diff: 1 Topic: Conceptual Problems 100) What hybrid orbitals are used by carbon to form covalent bonds with hydrogen? A) sp B) sp2 C) sp3 D) sp3d Answer: C Diff: 2 Topic: Conceptual Problems 28 Copyright © 2014 Pearson Education, Inc. Shown are ball-and-stick (1) and space-filling (2) models of ethylene. 101) What is the H–C–H bond angle? A) 90° B) 109.5° C) 120° D) 180° Answer: C Diff: 1 Topic: Conceptual Problems 102) What hybrid orbitals are used by carbon to form covalent bonds with hydrogen? A) sp B) sp2 C) sp3 D) sp3d Answer: B Diff: 1 Topic: Conceptual Problems 29 Copyright © 2014 Pearson Education, Inc. Shown are ball-and-stick (1) and space-filling (2) models of acetylene. 103) What is the H–C–C bond angle? A) 90° B) 109.5° C) 120° D) 180° Answer: D Diff: 1 Topic: Conceptual Problems 104) What hybrid orbitals are used by carbon to form covalent bonds with hydrogen? A) sp B) sp2 C) sp3 D) sp3d Answer: A Diff: 1 Topic: Conceptual Problems 30 Copyright © 2014 Pearson Education, Inc. 105) Which of these molecules above have a partial positive charge (δ+) on the carbon atom? A) only (1) B) only (3) C) (1) and (3) D) (2) and (4) Answer: D Diff: 3 Topic: Conceptual Problems 106) Which of these molecules above have a large partial negative charge (δ-) on the carbon atom? A) only (1) B) only (3) C) (1) and (3) D) (2) and (4) Answer: B Diff: 3 Topic: Conceptual Problems 31 Copyright © 2014 Pearson Education, Inc. 107) In the figure above, which structures are identical? A) All are identical. B) None are identical. C) only (1) and (4) D) only (1), (3), and (4) Answer: C Diff: 2 Topic: Conceptual Problems 108) In the figure above, which are isomers of compound (1)? A) All are isomers of compound (1). B) None are isomers of compound (1). C) only (2) and (3) D) only (4) Answer: C Diff: 2 Topic: Conceptual Problems 109) In the figure above, which are branched hydrocarbons? A) All are branched hydrocarbons. B) None are branched hydrocarbons. C) only (1) and (4) D) only (1), (2), and (4) Answer: D Diff: 2 Topic: Conceptual Problems 32 Copyright © 2014 Pearson Education, Inc. 110) Which of the compounds shown above is correctly identified by the name pentane according to the IUPAC system of naming compounds? A) all B) none C) only (2) D) only (3) Answer: D Diff: 2 Topic: Conceptual Problems 111) Which of the compounds shown above is correctly identified by the name 2-methylbutane? A) All are 2-methylbutane. B) none C) only (1) D) only (1) and (4) Answer: D Diff: 2 Topic: Conceptual Problems 112) Which of the compounds shown above is correctly identified by the name 3-methylbutane? A) all B) none C) only (4) D) only (1) and (4) Answer: B Diff: 3 Topic: Conceptual Problems 113) Which of the compounds shown above is correctly identified by the name 2, 2dimethylpropane? A) all B) none C) only (2) D) only (1), (2), and (4) Answer: C Diff: 3 Topic: Conceptual Problems 114) Which of the compounds shown above is correctly identified by the name 3, 3dimethylpropane? A) all B) none C) only (4) D) only (1) and (4) Answer: B Diff: 3 Topic: Conceptual Problems 33 Copyright © 2014 Pearson Education, Inc. 115) What is the IUPAC name of the following alkane? A) decane B) 2, 4-dimethyloctane C) 5, 7-dimethyloctane D) 1, 1, 3-trimethylheptane Answer: B Diff: 3 Topic: Conceptual Problems 116) What is the IUPAC name of the following alkane? A) 2,5-dimethylhexane B) octane C) 1,1,4,4-tetramethylbutane D) 1,1,4-trimethylpentane Answer: A Diff: 3 Topic: Conceptual Problems 34 Copyright © 2014 Pearson Education, Inc. 117) Which are isomers? A) All are isomers. B) (1) and (2); (3) and (4) C) (1) and (3); (2) and (4) D) (1) and (4); (2) and (3) Answer: D Diff: 2 Topic: Conceptual Problems 35 Copyright © 2014 Pearson Education, Inc. 118) To which family does this organic compound belong? A) alkane B) alkene C) alkyne D) arene Answer: C Diff: 2 Topic: Conceptual Problems 119) To which family does this organic compound belong? A) alkane B) alkene C) alkyne D) arene Answer: B Diff: 2 Topic: Conceptual Problems 36 Copyright © 2014 Pearson Education, Inc. 120) To which family does this organic compound belong? A) alkane B) alkene C) alkyne D) arene Answer: D Diff: 2 Topic: Conceptual Problems 121) To which family does this organic compound belong? A) alkane B) alkene C) alkyne D) arene Answer: A Diff: 2 Topic: Conceptual Problems 37 Copyright © 2014 Pearson Education, Inc. 122) To which family does this organic compound belong? A) alcohol B) aldehyde C) ether D) ketone Answer: D Diff: 2 Topic: Conceptual Problems 123) To which family does this organic compound belong? A) alcohol B) aldehyde C) ether D) ketone Answer: A Diff: 2 Topic: Conceptual Problems 38 Copyright © 2014 Pearson Education, Inc. 124) To which family does this organic compound belong? A) alcohol B) aldehyde C) ether D) ketone Answer: B Diff: 2 Topic: Conceptual Problems 125) To which family does this organic compound belong? A) alcohol B) aldehyde C) ether D) ketone Answer: C Diff: 2 Topic: Conceptual Problems 39 Copyright © 2014 Pearson Education, Inc. 126) To which family does this organic compound belong? A) amide B) amine C) carboxylic acid D) ester Answer: C Diff: 2 Topic: Conceptual Problems 127) To which family does this organic compound belong? A) amide B) amine C) carboxylic acid D) ester Answer: A Diff: 2 Topic: Conceptual Problems 40 Copyright © 2014 Pearson Education, Inc. 128) To which family does this organic compound belong? A) amide B) amine C) carboxylic acid D) ester Answer: B Diff: 2 Topic: Conceptual Problems 129) To which family does this organic compound belong? A) amide B) amine C) carboxylic acid D) ester Answer: D Diff: 2 Topic: Conceptual Problems 41 Copyright © 2014 Pearson Education, Inc. 130) Identify the functional groups in the following compound. A) alcohol and ketone B) alcohol, amine, and ketone C) amine and carboxylic acid D) amine, hydroxide, and ketone Answer: C Diff: 2 Topic: Conceptual Problems 131) Identify the functional groups in the following compound. A) alcohol B) alcohol and aldehyde C) alcohol and ketone D) aldehyde and hydroxide Answer: B Diff: 3 Topic: Conceptual Problems 42 Copyright © 2014 Pearson Education, Inc. 132) Identify the carboxylic acid and alcohol from which the following ester was made. A) CH3CO2H and CH3OH B) CH3CH2CO2H and CH3OH C) CH3CO2H and CH3CH2OH D) CH3CH2CO2H and CH3CH2OH Answer: C Diff: 4 Topic: Conceptual Problems 133) Identify the carboxylic acid and alcohol from which the following ester was made. A) CH3CO2H and CH3CH2OH B) CH3CO2H and CH3CH2CH2OH C) CH3CH2CO2H and CH3CH2OH D) CH3CH2CO2H and CH3CH2CH2OH Answer: C Diff: 4 Topic: Conceptual Problems 134) The sum of the many organic reactions that occur in the cell is called A) anabolism. B) catabolism. C) metabolism. D) none of these Answer: C Diff: 1 Topic: Section 23.9 An Overview of Biological Chemistry 43 Copyright © 2014 Pearson Education, Inc. 135) The reactions that generally release energy that is used to power living organisms are called A) anabolic reactions. B) catabolic reactions. C) metabolic reactions. D) none of these Answer: B Diff: 1 Topic: Section 23.9 An Overview of Biological Chemistry 136) The major final product of the four stages of catabolism is A) acetyl CoA. B) ATP. C) CO2. D) fatty acids. Answer: B Diff: 1 Topic: Section 23.9 An Overview of Biological Chemistry 137) Which molecule is referred to as the "energy storehouse"? A) acetyl CoA B) ATP C) CO2 D) fatty acids Answer: B Diff: 1 Topic: Section 23.9 An Overview of Biological Chemistry 138) Approximately what mass percent of a body's dry weight consists of proteins? A) 5% B) 25% C) 50% D) 72% Answer: C Diff: 1 Topic: Section 23.10 Amino Acids, Peptides, and Proteins 139) In addition to an amine, which functional group do all amino acids contain? A) an alcohol B) an amide C) a carboxylic acid D) an oxyacid Answer: C Diff: 1 Topic: Section 23.10 Amino Acids, Peptides, and Proteins 44 Copyright © 2014 Pearson Education, Inc. 140) A peptide bond links A) an alcohol and a ketone. B) an amide and an aldehyde. C) an amine and a carboxylic acid. D) ATP and acetyl CoA. Answer: C Diff: 1 Topic: Section 23.10 Amino Acids, Peptides, and Proteins 141) What does the term "alpha" amino acid mean? A) The amino group attaches to the carbon in the carboxyl group. B) The amino group attaches to the carbon next to the carboxylic acid group. C) The amino acid contains only one carbon atom. D) The amino acid contains only one carboxylic acid group. Answer: B Diff: 1 Topic: Section 23.10 Amino Acids, Peptides, and Proteins 142) How many alpha amino acids commonly make up the different proteins found in humans? A) 4 B) 20 C) 100 D) millions Answer: B Diff: 1 Topic: Section 23.10 Amino Acids, Peptides, and Proteins 143) What does the term "essential" mean when referring to amino acids? These are the amino acids which A) are necessary for digestion. B) are necessary for respiration. C) are synthesized in our bodies. D) we must obtain from our diet. Answer: D Diff: 1 Topic: Section 23.10 Amino Acids, Peptides, and Proteins 144) Which is an amino acid nonpolar neutral side chain? A) –CH3 B) –CH2OH C) –CH2CO2H D) –CH2CH2CH2CH2NH2 Answer: A Diff: 1 Topic: Section 23.10 Amino Acids, Peptides, and Proteins 145) Which is an amino acid polar neutral side chain? 45 Copyright © 2014 Pearson Education, Inc. A) –CH3 B) –CH2OH C) –CH2CO2H D) –CH2CH2CH2CH2NH2 Answer: B Diff: 1 Topic: Section 23.10 Amino Acids, Peptides, and Proteins 146) Which is an amino acid basic side chain? A) –CH3 B) –CH2OH C) –CH2CO2H D) –CH2CH2CH2CH2NH2 Answer: D Diff: 1 Topic: Section 23.10 Amino Acids, Peptides, and Proteins 147) Which is an amino acid acidic side chain? A) –CH3 B) –CH2OH C) –CH2CO2H D) –CH2CH2CH2CH2NH2 Answer: C Diff: 1 Topic: Section 23.10 Amino Acids, Peptides, and Proteins 148) Which one of the following amino acids does not contain a basic side chain A) arginine B) histidine C) lysine D) serine Answer: D Diff: 1 Topic: Section 23.10 Amino Acids, Peptides, and Proteins 149) Which of the following amino acids is acidic? A) alanine B) aspartic C) glycine D) valine Answer: B Diff: 1 Topic: Section 23.10 Amino Acids, Peptides, and Proteins 150) Which one of the following amino acids contains a polar side chain? 46 Copyright © 2014 Pearson Education, Inc. A) alanine B) glycine C) serine D) valine Answer: C Diff: 1 Topic: Section 23.10 Amino Acids, Peptides, and Proteins 151) Which of the following amino acids contains a benzyl group? A) glycine B) isoleucine C) methionine D) phenylalanine Answer: D Diff: 1 Topic: Section 23.10 Amino Acids, Peptides, and Proteins 152) Which one of the amino acids contains a double ring structure? A) phenylalanine B) proline C) tryptophan D) tyrosine Answer: C Diff: 1 Topic: Section 23.10 Amino Acids, Peptides, and Proteins 153) Which amino acid has the simplest structure? A) alanine B) glycine C) leucine D) valine Answer: B Diff: 1 Topic: Section 23.10 Amino Acids, Peptides, and Proteins 154) Which of the following amino acids contains a sulfur in its side chain? A) aspartic acid B) glutamic acid C) methionine D) threonine Answer: C Diff: 1 Topic: Section 23.10 Amino Acids, Peptides, and Proteins 47 Copyright © 2014 Pearson Education, Inc. 155) What does the term "hydrophobic" mean? A) water reactive B) water repelling C) water soluble D) none of these Answer: B Diff: 1 Topic: Section 23.10 Amino Acids, Peptides, and Proteins 156) Which one of the following amino acids contains a hydrophobic side chain? A) leucine B) serine C) threonine D) tyrosine Answer: A Diff: 1 Topic: Section 23.10 Amino Acids, Peptides, and Proteins 157) All but one of the common amino acids contain a -NH2 amino group. Which one contains an -NH- amino group as part of a ring structure? A) phenylalanine B) proline C) tryptophan D) tyrosine Answer: B Diff: 1 Topic: Section 23.10 Amino Acids, Peptides, and Proteins 158) Peptide bonds that link amino acids together in proteins contain the ________ functional group. A) amine B) amide C) ester D) ketone Answer: B Diff: 2 Topic: Section 23.10 Amino Acids, Peptides, and Proteins 159) In the protein, Val-Tyr-His-Pro, which amino acid contains the N-terminal group? A) histidine B) proline C) tyrosine D) valine Answer: D Diff: 2 Topic: Section 23.10 Amino Acids, Peptides, and Proteins 48 Copyright © 2014 Pearson Education, Inc. 160) In the protein, Asn-Phe-Cys-Lys, which amino acid contains the C-terminal group? A) asparagine B) cysteine C) lysine D) phenylalanine Answer: C Diff: 2 Topic: Section 23.10 Amino Acids, Peptides, and Proteins 161) How many possible tripeptides can be made with the amino acids: tyrosine, histidine, and cysteine, each used only once? A) 3 B) 4 C) 6 D) 9 Answer: C Diff: 2 Topic: Section 23.10 Amino Acids, Peptides, and Proteins 162) Which two amino acids form the dipeptide below? A) asparagine and proline B) glycine and cysteine C) serine and alanine D) threonine and valine Answer: D Diff: 3 Topic: Section 23.10 Amino Acids, Peptides, and Proteins 49 Copyright © 2014 Pearson Education, Inc. 163) Which of the following notations represents the dipeptide shown below? A) Phe-Thr B) Thr-Phe C) Ser-Tyr D) Tyr-Ser Answer: C Diff: 3 Topic: Section 23.10 Amino Acids, Peptides, and Proteins 164) Which of the following notations represents the polypeptide shown below? A) Gly-Ala-Ser B) Gly-Val-Thr C) Ser-Ala-Gly D) Thr-Val-Gly Answer: A Diff: 3 Topic: Section 23.10 Amino Acids, Peptides, and Proteins 50 Copyright © 2014 Pearson Education, Inc. 165) How many peptide bonds are present in the polypeptide shown below? A) one B) two C) three D) four Answer: B Diff: 3 Topic: Section 23.10 Amino Acids, Peptides, and Proteins 166) A partial hydrolysis of a protein yielded the following fragments: Ser-Gly, Gly-Ala, GlyAla-Val, Val-Leu, Ala-Val. What is the sequence of amino acids in the polypeptide? A) Gly-Leu-Ser-Ala-Val B) Leu-Ala-Gly-Val-Ser C) Ser-Gly-Ala-Val-Leu D) Val-Ala-Gly-Ser-Leu Answer: C Diff: 3 Topic: Section 23.10 Amino Acids, Peptides, and Proteins 167) Hemoglobin is a protein molecule which contains 4 iron atoms. If the mass percent of iron is 0.342%, what is the molar mass of hemoglobin? A) 1020 g/mol B) 16,300 g/mol C) 65,300 g/mol D) none of these Answer: C Diff: 3 Topic: Section 23.10 Amino Acids, Peptides, and Proteins 168) The term "carbohydrates" refers to a large class of polyhydroxylated A) alcohols and carboxylic acids. B) aldehydes and ketones. C) amines and amides. D) ethers and esters. Answer: B Diff: 1 Topic: Section 23.11 Carbohydrates 51 Copyright © 2014 Pearson Education, Inc. 169) Which suffix on a ketone or aldehyde indicates a sugar? A) -ane B) -ene C) -one D) -ose Answer: D Diff: 1 Topic: Section 23.11 Carbohydrates 170) The monosaccharide shown below is a(n) A) aldohexose. B) aldopentose. C) ketohexose. D) ketopentose. Answer: A Diff: 2 Topic: Section 23.11 Carbohydrates 171) The monosaccharide shown below is a(n) A) aldohexose. B) aldopentose. C) ketohexose. D) ketopentose. Answer: C Diff: 2 Topic: Section 23.11 Carbohydrates 52 Copyright © 2014 Pearson Education, Inc. 172) What class of compounds are cyclic? A) DNA B) lipids C) monosaccharides D) proteins Answer: C Diff: 2 Topic: Section 23.11 Carbohydrates 173) In water, which form of glucose predominates? A) cyclic α B) cyclic β C) open chain D) All three are equal in solution. Answer: B Diff: 1 Topic: Section 23.11 Carbohydrates 174) When crystallized, which form of glucose predominates? A) cyclic α B) cyclic β C) open chain D) All three are equal in crystals. Answer: A Diff: 1 Topic: Section 23.11 Carbohydrates 175) Sucrose, common table sugar, when hydrolyzed will form A) amylose and glycogen. B) cellulose and starch. C) glucose and fructose. D) lactose and maltose. Answer: C Diff: 1 Topic: Section 23.11 Carbohydrates 176) Cellulose is a polymer consisting of thousands of A) α-glucose molecules. B) β-glucose molecules. C) long chain fatty acids. D) amino acids. Answer: B Diff: 1 Topic: Section 23.11 Carbohydrates 53 Copyright © 2014 Pearson Education, Inc. 177) Which substance is a monosaccharide? A) cellulose B) glucose C) glycogen D) starch Answer: B Diff: 1 Topic: Section 23.11 Carbohydrates 178) Lipids are characterized by what property? A) chemical reactivity B) chemical structure C) refractive index D) solubility Answer: D Diff: 1 Topic: Section 23.12 Lipids 179) Which statement below regarding fatty acids is not correct? Fatty acids A) are always liquids. B) are long chain carboxylic acids. C) are usually unbranched chains. D) usually have an even number of carbon atoms. Answer: A Diff: 2 Topic: Section 23.12 Lipids 180) All of the fatty acids below contain eighteen carbons and range from saturated to three double bonds. Which has the highest melting point? A) stearic acid (saturated) B) oleic acid (one double bond) C) linoleic acid (two double bonds) D) linolenic acid (three double bonds) Answer: A Diff: 2 Topic: Section 23.12 Lipids 181) What functional group is commonly found in fats? A) –NH2 B) –OH C) –C–O–C D) O –O–C–C– Answer: D Diff: 2 Topic: Section 23.12 Lipids 54 Copyright © 2014 Pearson Education, Inc. 182) Which one of the following amine bases does not appear in DNA? A) adenine B) cytosine C) guanine D) uracil Answer: D Diff: 1 Topic: Section 23.13 Nucleic Acids 183) The one cyclic amine base that occurs in DNA but not in RNA is A) cystine. B) guanine. C) thymine. D) uracil. Answer: C Diff: 1 Topic: Section 23.13 Nucleic Acids 184) Which of the following is not part of a nucleotide? A) cyclic amine base B) fatty acid C) phosphoric acid D) a sugar Answer: B Diff: 1 Topic: Section 23.13 Nucleic Acids 185) The attractive force between the cylic amine bases in DNA is A) disulfide bridges. B) hydrogen bonding. C) hydrophobic stacking. D) ionic interactions of salt bridges. Answer: B Diff: 1 Topic: Section 23.13 Nucleic Acids 186) What is the sugar component in RNA called? A) fructose B) galactose C) glucose D) ribose Answer: D Diff: 1 Topic: Section 23.13 Nucleic Acids 55 Copyright © 2014 Pearson Education, Inc. 187) What is the backbone of the nucleic acid constructed of? A) alternating sugar phosphate groups B) amine bases C) glucose polymers D) polyamides Answer: A Diff: 2 Topic: Section 23.13 Nucleic Acids 188) The nucleotide sequence, T-A-G, stands for A) threonine-alanine-glutamine. B) thymine-adenine-guanine. C) tyrosine-asparagine-glutamic acid. D) None of these Answer: B Diff: 2 Topic: Section 23.13 Nucleic Acids 189) Which of the following bases pairs with adenine in DNA? A) cytosine B) guanine C) thymine D) uracil Answer: C Diff: 2 Topic: Section 23.13 Nucleic Acids 190) What is the complementary DNA sequence to ATATGGTC? A) CGCGTTGA B) GCGCAACT C) TATACCAG D) TUTUCCAG Answer: C Diff: 3 Topic: Section 23.13 Nucleic Acids 191) What is the complementary mRNA sequence to GCTATACCGT? A) ATCGCGTTAC B) CGAUAUGGCA C) TUGCGCUUTG D) UTCGCGTTUC Answer: B Diff: 3 Topic: Section 23.13 Nucleic Acids 56 Copyright © 2014 Pearson Education, Inc. 192) The base sequences in mRNA that code for particular amino acids are Trp: UGG, Phe: UUU, and Glu: GAA. What is the peptide that is produced from the DNA sequence: CTTACCAAA? A) Glu-Phe-Trp B) Glu-Trp-Phe C) Phe-Trp-Glu D) Trp-Glu-Phe Answer: B Diff: 4 Topic: Section 23.13 Nucleic Acids 193) The process of forming mRNA from DNA is called A) metamorphosis. B) replication. C) transcription. D) translation. Answer: C Diff: 1 Topic: Section 23.13 Nucleic Acids 194) Transfer-RNA is involved in A) replication. B) transcription. C) translation. D) none of these Answer: C Diff: 1 Topic: Section 23.13 Nucleic Acids 57 Copyright © 2014 Pearson Education, Inc. 195) Identify the amino acid shown below. A) Alanine (Ala) B) Glycine (Gly) C) Isoleucine (Ile) D) Leucine (Leu) Answer: D Diff: 3 Topic: Conceptual Problems 196) Identify the amino acid shown below. A) Alanine (Ala) B) Glycine (Gly) C) Isoleucine (Ile) D) Leucine (Leu) Answer: B Diff: 3 Topic: Conceptual Problems 58 Copyright © 2014 Pearson Education, Inc. 197) Identify the amino acid shown below. A) Alanine (Ala) B) Glycine (Gly) C) Isoleucine (Ile) D) Leucine (Leu) Answer: A Diff: 2 Topic: Conceptual Problems 59 Copyright © 2014 Pearson Education, Inc. 198) Identify the amino acid shown below. A) Alanine (Ala) B) Glycine (Gly) C) Isoleucine (Ile) D) Leucine (Leu) Answer: C Diff: 2 Topic: Conceptual Problems 60 Copyright © 2014 Pearson Education, Inc. 199) Identify the amino acid shown below. A) Methionine (Met) B) Phenylalanine (Phe) C) Proline (Pro) D) Tryptophan (Trp) Answer: C Diff: 2 Topic: Conceptual Problems 61 Copyright © 2014 Pearson Education, Inc. 200) Identify the amino acid shown below. A) Methionine (Met) B) Phenylalanine (Phe) C) Proline (Pro) D) Tryptophan (Trp) Answer: A Diff: 2 Topic: Conceptual Problems 62 Copyright © 2014 Pearson Education, Inc. 201) Identify the amino acid shown below. A) Methionine (Met) B) Phenylalanine (Phe) C) Proline (Pro) D) Tryptophan (Trp) Answer: D Diff: 2 Topic: Conceptual Problems 63 Copyright © 2014 Pearson Education, Inc. 202) Identify the amino acid shown below. A) Methionine (Met) B) Phenylalanine (Phe) C) Proline (Pro) D) Tryptophan (Trp) Answer: B Diff: 2 Topic: Conceptual Problems 203) Identify the amino acid shown below. A) Cysteine (Cys) B) Serine (Ser) C) Threonine (Thr) D) Tyrosine (Tyr) Answer: C Diff: 2 Topic: Conceptual Problems 64 Copyright © 2014 Pearson Education, Inc. 204) Identify the amino acid shown below. A) Cysteine (Cys) B) Serine (Ser) C) Threonine (Thr) D) Tyrosine (Tyr) Answer: B Diff: 2 Topic: Conceptual Problems 205) Identify the amino acid shown below. A) Cysteine (Cys) B) Serine (Ser) C) Threonine (Thr) D) Tyrosine (Tyr) Answer: D Diff: 2 Topic: Conceptual Problems 65 Copyright © 2014 Pearson Education, Inc. 206) Identify the amino acid shown below. A) Cysteine (Cys) B) Serine (Ser) C) Threonine (Thr) D) Tyrosine (Tyr) Answer: A Diff: 2 Topic: Conceptual Problems 207) Identify the amino acid shown below. A) Asparagine (Asn) B) Aspartic acid (Asp) C) Glutamic acid (Glu) D) Glutamine (Gln) Answer: A Diff: 2 Topic: Conceptual Problems 66 Copyright © 2014 Pearson Education, Inc. 208) Identify the amino acid shown below. A) Asparagine (Asn) B) Aspartic acid (Asp) C) Glutamic acid (Glu) D) Glutamine (Gln) Answer: D Diff: 2 Topic: Conceptual Problems 209) Identify the amino acid shown below. A) Asparagine (Asn) B) Aspartic acid (Asp) C) Glutamic acid (Glu) D) Glutamine (Gln) Answer: B Diff: 2 Topic: Conceptual Problems 67 Copyright © 2014 Pearson Education, Inc. 210) Identify the amino acid shown below. A) Asparagine (Asn) B) Aspartic acid (Asp) C) Glutamic acid (Glu) D) Glutamine (Gln) Answer: C Diff: 2 Topic: Conceptual Problems 211) Identify the amino acid shown below. A) Arganine (Arg) B) Histidine (His) C) Lysine (Lys) D) Valine (Val) Answer: D Diff: 2 Topic: Conceptual Problems 68 Copyright © 2014 Pearson Education, Inc. 212) Identify the amino acid shown below. A) Arganine (Arg) B) Histidine (His) C) Lysine (Lys) D) Valine (Val) Answer: C Diff: 2 Topic: Conceptual Problems 213) Identify the amino acid shown below. A) Arganine (Arg) B) Histidine (His) C) Lysine (Lys) D) Valine (Val) Answer: B Diff: 2 Topic: Conceptual Problems 69 Copyright © 2014 Pearson Education, Inc. 214) Identify the amino acid shown below. A) Arganine (Arg) B) Histidine (His) C) Lysine (Lys) D) Valine (Val) Answer: A Diff: 2 Topic: Conceptual Problems 215) Based on the structure of its side chains, the amino acid shown below can be classified as A) acidic. B) basic. C) neutral, non-polar. D) neutral, polar. Answer: C Diff: 2 Topic: Conceptual Problems 70 Copyright © 2014 Pearson Education, Inc. 216) Based on the structure of its side chains, the amino acid shown below can be classified as A) acidic. B) basic. C) neutral, non-polar. D) neutral, polar. Answer: C Diff: 2 Topic: Conceptual Problems 217) Based on the structure of its side chains, the amino acid shown below can be classified as A) acidic. B) basic. C) neutral, non-polar. D) neutral, polar. Answer: C Diff: 2 Topic: Conceptual Problems 71 Copyright © 2014 Pearson Education, Inc. 218) Based on the structure of its side chains, the amino acid shown below can be classified as A) acidic. B) basic. C) neutral, non-polar. D) neutral, polar. Answer: C Diff: 2 Topic: Conceptual Problems 219) Based on the structure of its side chains, the amino acid shown below can be classified as A) acidic. B) basic. C) neutral, non-polar. D) neutral, polar. Answer: C Diff: 2 Topic: Conceptual Problems 72 Copyright © 2014 Pearson Education, Inc. 220) Based on the structure of its side chains, the amino acid shown below can be classified as A) acidic. B) basic. C) neutral, non-polar. D) neutral, polar. Answer: C Diff: 3 Topic: Conceptual Problems 73 Copyright © 2014 Pearson Education, Inc. 221) Based on the structure of its side chains, the amino acid shown below can be classified as A) acidic. B) basic. C) neutral, non-polar. D) neutral, polar. Answer: C Diff: 2 Topic: Conceptual Problems 74 Copyright © 2014 Pearson Education, Inc. 222) Based on the structure of its side chains, the amino acid shown below can be classified as A) acidic. B) basic. C) neutral, non-polar. D) neutral, polar. Answer: C Diff: 2 Topic: Conceptual Problems 223) Based on the structure of its side chains, the amino acid shown below can be classified as A) acidic. B) basic. C) neutral, non-polar. D) neutral, polar. Answer: D Diff: 2 Topic: Conceptual Problems 75 Copyright © 2014 Pearson Education, Inc. 224) Based on the structure of its side chains, the amino acid shown below can be classified as A) acidic. B) basic. C) neutral, non-polar. D) neutral, polar. Answer: D Diff: 2 Topic: Conceptual Problems 225) Based on the structure of its side chains, the amino acid shown below can be classified as A) acidic. B) basic. C) neutral, non-polar. D) neutral, polar. Answer: D Diff: 2 Topic: Conceptual Problems 76 Copyright © 2014 Pearson Education, Inc. 226) Based on the structure of its side chains, the amino acid shown below can be classified as A) acidic. B) basic. C) neutral, non-polar. D) neutral, polar. Answer: D Diff: 2 Topic: Conceptual Problems 227) Based on the structure of its side chains, the amino acid shown below can be classified as A) acidic. B) basic. C) neutral, non-polar. D) neutral, polar. Answer: D Diff: 2 Topic: Conceptual Problems 77 Copyright © 2014 Pearson Education, Inc. 228) Based on the structure of its side chains, the amino acid shown below can be classified as A) acidic. B) basic. C) neutral, non-polar. D) neutral, polar. Answer: A Diff: 2 Topic: Conceptual Problems 229) Based on the structure of its side chains, the amino acid shown below can be classified as A) acidic. B) basic. C) neutral, non-polar. D) neutral, polar. Answer: A Diff: 2 Topic: Conceptual Problems 78 Copyright © 2014 Pearson Education, Inc. 230) Based on the structure of its side chains, the amino acid shown below can be classified as A) acidic. B) basic. C) neutral, non-polar. D) neutral, polar. Answer: C Diff: 2 Topic: Conceptual Problems 231) Based on the structure of its side chains, the amino acid shown below can be classified as A) acidic. B) basic. C) neutral, non-polar. D) neutral, polar. Answer: B Diff: 2 Topic: Conceptual Problems 79 Copyright © 2014 Pearson Education, Inc. 232) Based on the structure of its side chains, the amino acid shown below can be classified as A) acidic. B) basic. C) neutral, non-polar. D) neutral, polar. Answer: B Diff: 2 Topic: Conceptual Problems 233) Based on the structure of its side chains, the amino acid shown below can be classified as A) acidic. B) basic. C) neutral, non-polar. D) neutral, polar. Answer: B Diff: 2 Topic: Conceptual Problems 80 Copyright © 2014 Pearson Education, Inc. 234) Is the following model of glucose in the α form or the β form? A) α form B) β form Answer: A Diff: 4 Topic: Conceptual Problems 235) Is the following model of glucose in the α form or the β form? A) α form B) β form Answer: B Diff: 4 Topic: Conceptual Problems 81 Copyright © 2014 Pearson Education, Inc. 236) Identify the following dipeptide. A) Ser-Ala B) Ser-Leu C) Ser-Phe D) Ser-Val Answer: A Diff: 4 Topic: Conceptual Problems 82 Copyright © 2014 Pearson Education, Inc. 237) Identify the following dipeptide. A) Ser-Ala B) Ser-Leu C) Ser-Phe D) Ser-Val Answer: D Diff: 4 Topic: Conceptual Problems 83 Copyright © 2014 Pearson Education, Inc. 238) Identify the following amine base found in nucleic acids. A) Adenine (A) B) Cytosine (C) C) Thymine (T) D) Uracil (U) Answer: C Diff: 2 Topic: Conceptual Problems 239) Identify the following amine base found in nucleic acids. A) Adenine (A) B) Cytosine (C) C) Thymine (T) D) Uracil (U) Answer: A Diff: 2 Topic: Conceptual Problems 84 Copyright © 2014 Pearson Education, Inc. 240) Identify the following amine base found in nucleic acids. A) Adenine (A) B) Cytosine (C) C) Thymine (T) D) Uracil (U) Answer: D Diff: 2 Topic: Conceptual Problems 241) Identify the following amine base found in nucleic acids. A) Adenine (A) B) Cytosine (C) C) Thymine (T) D) Uracil (U) Answer: B Diff: 2 Topic: Conceptual Problems 85 Copyright © 2014 Pearson Education, Inc. 23.2 Algorithmic Questions 1) How many isomers are there for C5H12 ? A) 3 B) 4 C) 5 D) 6 Answer: A Diff: 3 Topic: Section 23.1 Organic Molecules and Their Structures: Alkanes Algo. Option: algorithmic 2) When octane, , reacts with oxygen to produce carbon dioxide and water, 5070 kJ of heat are released per mole of hydrocarbon. How many kJ of heat are released per gram of oxygen used? A) 6.34 kJ/g B) 12.7 kJ/g C) 1980 kJ/g D) 3960 kJ/g Answer: B Diff: 3 Topic: Section 23.1 Organic Molecules and Their Structures: Alkanes Algo. Option: algorithmic 3) Which compound is not a saturated hydrocarbon? A) 1-butyne B) cycloheptene C) 3-methylheptane D) 2-heptyne Answer: C Diff: 2 Topic: Section 23.4 Unsaturated Organic Compounds: Alkenes and Alkynes Algo. Option: algorithmic 4) Which one of the following molecules is the most polar? A) butane B) butanoic acid C) cyclohexane D) ethanol Answer: B Diff: 3 Topic: Section 23.8 Carbonyl Compounds Algo. Option: algorithmic 86 Copyright © 2014 Pearson Education, Inc. 5) Which one of the following amino acids does not contain a basic side chain? A) arginine B) histidine C) lysine D) threonine Answer: D Diff: 3 Topic: Section 23.10 Amino Acids, Peptides, and Proteins 6) Which one of the following amino acids contains a polar side chain? A) alanine B) glycine C) threonine D) valine Answer: C Diff: 3 Topic: Section 23.10 Amino Acids, Peptides, and Proteins 7) Which one of the following amino acids contains a hydrophobic side chain? A) valine B) histidine C) glutamine D) glutamic acid Answer: A Diff: 3 Topic: Section 23.10 Amino Acids, Peptides, and Proteins 8) In the protein, His-Tyr-Val-Pro, which amino acid contains the N-terminal group? A) valine B) tyrosine C) proline D) histidine Answer: D Diff: 3 Topic: Section 23.10 Amino Acids, Peptides, and Proteins 9) In the protein, Arg-Pro-Leu-Gln, which amino acid contains the C-terminal group? A) proline B) leucine C) glutamine D) arginine Answer: C Diff: 3 Topic: Section 23.10 Amino Acids, Peptides, and Proteins 87 Copyright © 2014 Pearson Education, Inc. 23.3 Short Answer Questions 1) In organic molecules the molecular geometry exhibited by carbon is ________ when carbon is bonded to four atoms by four single bonds, ________ when carbon is bonded to three atoms by one double bond and two single bonds, and ________ when carbon is bonded to two atoms by one triple bond and one single bond. Answer: tetrahedral, trigonal planar, linear Diff: 1 Topic: Section 23.1 Organic Molecules and Their Structures: Alkanes 2) Do the two condensed structures (1) and (2) below represent the same or different molecules? CH3 CH3 CH3 | | | CH3CHCH2CHCH3 CH3CHCH2CHCH3 | CH3 (1) (2) Answer: Condensed structures (1) and (2) represent the same molecule. Diff: 2 Topic: Section 23.1 Organic Molecules and Their Structures: Alkanes 3) Do the condensed structures shown below represent the same or different molecules? (1) CH3CH2CH2CH2CH(CH3)2 (2) CH3 | CH3CHCH2CH2CH2CH3 Answer: Condensed structures (1) and (2) represent the same molecule. Diff: 2 Topic: Section 23.1 Organic Molecules and Their Structures: Alkanes 4) Organic molecules containing only carbon and hydrogen and having only single bonds are called ________ hydrocarbons, or ________. Answer: saturated, alkanes Diff: 2 Topic: Section 23.2 Families of Organic Compounds: Functional Groups 5) The condensed structures for the two isomers of C4H10 are (1) ________ and (2) ________. Answer: (1) CH3CH2CH2CH3 (2) CH3 | CH3CHCH3 Diff: 3 Topic: Section 23.1 Organic Molecules and Their Structures: Alkanes 88 Copyright © 2014 Pearson Education, Inc. 6) The alkane, 3-ethyl-3-methylhexane contains ________ carbon atoms and ________ hydrogen atoms. Answer: 9, 20 Diff: 2 Topic: Section 23.3 Naming Organic Compounds 7) What is the empirical and molecular formulas of 1-tert-butyl-2-methylcyclopropane? Answer: CH2, C8H16 Diff: 3 Topic: Section 23.3 Naming Organic Compounds 8) The IUPAC name for the alkane shown below is ________. CH3 | CH3CHCH2CH2CH2CH3 Answer: 2-Methylhexane Diff: 2 Topic: Section 23.3 Naming Organic Compounds 9) In the dark the reaction of 2-pentene with chlorine will form how many different products? Answer: 1 Diff: 4 Topic: Section 23.4 Unsaturated Organic Compounds: Alkenes and Alkynes 10) The molecules CH3CH2CH2CH2C CH and CH3CH2CH2CH2CH=CH2, respectively, belong to the ________ family and the ________ family of organic molecules. Answer: alkyne, alkene Diff: 2 Topic: Section 23.4 Unsaturated Organic Compounds: Alkenes and Alkynes 11) The cycloalkane represented by a hexagon is named ________ and has the molecular formula ________. Answer: cyclohexane, C6H12 Diff: 2 Topic: Section 23.5 Cyclic Organic Compounds 12) When toluene C6H5CH3 is reacted with Br2/FeBr3, the number of different products that can be formed is ________. Answer: 3 Diff: 4 Topic: Section 23.6 Aromatic Compounds 89 Copyright © 2014 Pearson Education, Inc. 13) The molecule H2NCH2CH2CH2OH contains an ________ functional group and an ________ functional group. Answer: amine, alcohol Diff: 2 Topic: Section 23.7 Alcohols, Ethers, and Amines 14) The condensed formula of the smallest molecule that contains the ether functional group is ________. Answer: CH3OCH3 Diff: 3 Topic: Section 23.7 Alcohols, Ethers, and Amines 15) The molecule CH3CH2CO2CH2CO2H contains an ________ functional group and a ________ functional group. Answer: ester, carboxylic acid Diff: 2 Topic: Section 23.8 Carbonyl Compounds 16) In living cells reaction sequences that break molecules apart are known as ________, while reaction sequences in which larger molecules are created are known as ________. Answer: catabolism, anabolism Diff: 1 Topic: Section 23.9 An Overview of Biological Chemistry 17) The amide bonds that form when two or more amino acids link together are called ________ bonds. Answer: peptide Diff: 1 Topic: Section 23.10 Amino Acids, Peptides, and Proteins 18) Individual amino acids that make up a protein are called ________. Answer: residues Diff: 1 Topic: Section 23.10 Amino Acids, Peptides, and Proteins 19) Monosaccharides are classified as either ________ or ________. Answer: aldoses, ketoses Diff: 2 Topic: Section 23.11 Carbohydrates 20) Naturally occurring organic molecules that dissolve in nonpolar solvents are called ________ of which the most plentiful in nature are ________ and ________. Answer: lipids, animal fats, vegetable oils Diff: 2 Topic: Section 23.12 Lipids 90 Copyright © 2014 Pearson Education, Inc. 21) The four cyclic amine bases that occur in DNA are ________, ________, ________, and ________. Answer: adenine, guanine, cytosine, thymine Diff: 1 Topic: Section 23.13 Nucleic Acids 22) ________ is the means by which information in DNA is transferred to and decoded by RNA. ________ is the means by which RNA uses information to build proteins. Answer: transcription, translation Diff: 1 Topic: Section 23.13 Nucleic Acids 91 Copyright © 2014 Pearson Education, Inc.


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