Final Exam Review
26. Protein denaturation results in a disruption of the A. primary structure. B secondary and tertiary structure. C. primary and secondary structure. D. primary, secondary and tertiary structure
B secondary and tertiary structure.
29. How many peptide bonds are in the following structure? Gly-Phe-Leu-Asp A. 2 B. 3 C. 4 D. 5
B. 3
52. Which of the following structures is that of an L-monosaccharide?
C
59. Ketone reacts with two alcohols in the presence of an acid catalyst a) hemiacetal b) acetal c) alkene d) alcohol
b) acetal
95. oxidation of a primary alcohol. a. alkene b. aldehyde c. ether d. ketone
b. aldehyde
92. CH₂=CH-CH₃ + H₂O -H₂SO₄-> a. An alkane is formed. b. An alkene is formed. c. Two alcohol products are formed. d. Markovnikov's rule is needed to predict the major and minor alcohol products
d. Markovnikov's rule is needed to predict the major and minor alcohol products
103. Amide + strong base -> a) amide b) amine c) amine salt d) carboxylic acid salt e) more than one correct answer
e) more than one correct answer - amine and carboxylic acid salt
15. What is the condensed structural formula for 3-ethyl-2-methyloctanoic acid?
CH₃-CH(CH₃)-CH(CH₂CH₃)-CH₂-CH₂-CH₂-CH₂-COOH
4. Using the three-letter abbreviations for amino acids, following peptide would be ____ R groups: CH3, CH2 benzene, CH2-CH-(CH3)2 A. Ala-Phe-Val B. Leu-Phe-Ala C. Gly-Phe-Ile D. Ala-Phe-Leu
D. Ala-Phe-Leu
20. By convention, the N-terminal end of a peptide is usually placed on the _____ of a structure. A. top B. right C. bottom D. left
D. left
20. What is the general structural representation of an alcohol?
R-O-H
9. The functional group R-C=O-H is characteristic of a. aldehydes. b. esters. c. organic acids. d. peptide linkages. e. ketones.
a. aldehydes.
101. Primary amine + strong acid -> a) amide b) amine c) amine salt d) carboxylic acid salt e) more than one correct answer
c) amine salt
102. Amide + strong acid + H₂O a) amide b) amine c) amine salt d) carboxylic acid salt e) more than one correct answer
c) amine salt
13. Which of the following alcohols is a tertiary alcohol? a. HO-CH₂-CH(OH)-CH₂OH b. CH₃-CH₂-CH₂-OH c. HO-CH₂-CH₂-OH d. (CH₃)₃COH e. CH₃-CH₂-CH(OH)CH₃
d. (CH₃)₃COH
22. An RNA chain being synthesized grows in the ______ direction A. 5'→3' B. 3'→5' C. either direction D. none of the choices
A. 5'→3'
8. A complementary strand (written in 5'-3' order) for the DNA segment ACG is _____ A. AGC B. GCT C. TCG D. none
B. GCT
16. The following peptide would be named as ____ R groups: CH3, CH2 benzene, CH2-CH-(CH3)2 A. glycylvalinylphenylalanine B. alanylphenylalanylleucine C. alanylphyenylalanylvaline D. valinylphenylalanyl
B. alanylphenylalanylleucine
3. Amino acids with acidic side chains contain a ______ group A. -OH B. -NH2 C. -SH D. -COOH
D. -COOH
9. Phosphate groups in DNA connect the _____ positions of neighboring sugar units A. 2' and 5' B. 1' and 6' C. 2' and 3' D. 3' and 5'
D. 3' and 5'
18. Consider the tertiary structure of a protein containing two peptides with the segments shown below. What type(s) of interaction(s) would be possible between the side chains? Lys-Tyr-Pro-Asp A. hydrogen bonding B. salt bridges C. hydrophobic interactions D. all of the above
D. all of the above
28. Which of the following is a function of proteins? A. catalytic B. protective C. storage D. all of these
D. all of these, catalytic, protective, and storage
40. The IUPAC name for the compound is CH₃-CH(NH₂)-CH₂-CH(CH₃)-CH₃ a. 2-methylpentanamine b. 4-methylpentanamine c. 2-methyl-4-pentanamine d. 4-methyl-2-pentanamine
d. 4-methyl-2-pentanamine
85. The formula for a strong base is a. LiH. b. BaH. c. Fe(OH)2. d. LiOH. e. HOH.
d. LiOH.
36. What pharmacologically active amine is responsible for the signs and symptoms encountered in an allergic reaction? A. Histamine. B. Epinephrine. C. Dopamine. D. Serotonin.
A. Histamine.
65. Which of the following structures is incorrect?
Carbon can only have 4 bonds
46. 1° amide a) one carbon group b) two carbon groups c) three carbon groups d) four carbon groups
a) one carbon group R-C=O-NH₂
27. What is the predominating intermolecular force (IMF) that 1-hexyne would exhibit? a. Dipole-Dipole b. Hydrogen Bonding c. London Dispersion Forces (LDF) d. Does not have intermolecular forces
c. London Dispersion Forces (LDF)
8. The functional group R-C=O-R' is characteristic of a. aldehydes. b. esters. c. ketones. d. alcohols. e. acids.
c. ketones.
44. 1° amine a) one carbon group b) two carbon groups c) three carbon groups d) four carbon groups
a) one carbon group R-N-H-H
91. CH≡ CH + 2H₂ -Ni-> a. An alkane is formed. b. An alkene is formed. c. An aromatic hydrocarbon is formed. d. Markovnikov's rule is needed to predict the major organic product.
a. An alkane is formed.
81. Which are the Brønsted-Lowry base and conjugate base in the following equilibrium? HCOO-(aq) + H2O(l) ⇌ HCOOH(aq) + OH-(aq) a. HCOO- and OH- b. H2O and OH- c. H2O, HCOOH, and OH- d. HCOO- and HCOOH e. H2O and HCOOH
a. HCOO- and OH-
35. How many chiral carbon atoms does 2,3-dimethylpentane have? a. 0 b. 1 c. 2 d. 3 e. 4
b. 1
7. Which of the following compounds is a ketone? a. CH₃=O-O-CH₃ b. CH₃-CH₂-C=O-CH₃ c. CH₃-CH₂-C=O-OH d. CH₃-O-CH₃ e. CH₃-CH₂-OH
b. CH₃-CH₂-C=O-CH₃
88. If excess acid enters the blood the following reaction would shift towards the products. H₂CO₃(aq) + H₂O(l) ⇌ H₃O+ (aq) + HCO₃-(aq) a. True b. False
b. False H₂CO₃(aq) + H₂O(l) ⇌ H₃O+ (aq) + HCO₃-(aq)
2. What is the IUPAC name for the following structural formula? H₃C-CH₂-C(CH₃)(CH₂CH₃)-CH(CH₃)-CH₃ a. 1,1-dimethyl-2-ethylpropane b. isoheptane c. 2-ethyl-3-methylbutane d. 2-methyl-3-ethylbutane e. 2,3-dimethylpentane
2,3-dimethylpentane
14. What is the IUPAC name for the substance having the following condensed structural formula? (CH3)3-C-CH2-COOH a. 3,3-dimethyl-1-butanone b. 3,3-dimethylbutanoic acid c. 4,4-dimethylpentanal d. 3,3-dimethylpropanoic acid e. hexanoic acid
3,3-dimethylbutanoic acid
3. What is the IUPAC name for the following compound? CH₃-CH₃-CH(CH₃)-CH(CH₂CH₃)-CH₃-CH₃-CH₃ a. 4-ethyl-3-methylheptane b. 2,3-diethylhexane c. 3-propyl-4-methylhexane d. 4,5-diethyldecane e. 4-ethyl-5-methylheptane
4-ethyl-3-methylheptane
1. CH₃-C ≡ C-CH₂-CH₂-Cl is named a. 1-chloro-3-pentyne. b. 5-chloro-2-pentyne. c. 5-chloro-2-pentene. d. 1-acetylenyl-3-chloropropane. e. 1-chloro-3-pentene.
5-chloro-2-pentyne
23. An alpha amino acid contains A. an amino acid group on the carbon next to the carboxylate group B. an amino group on the end carbon C. two amino groups D. two carboxyl groups
A. an amino acid group on the carbon next to the carboxylate group
53. Which of the following structures is a representation of a cyclic form of this Fisher projection? CHO H-C-OH H-C-OH H-C-OH HO-C-H
B
14. DNA replication by DNA polymerase occurs in the ____ direction of the template strand A. 5'→3' B. 3'→5' C. both ways D. none of these
B. 3'→5'
6. If the following compound were completely hydrolyzed, how many amino acids could be produced? R groups: H, CH2 benzene, CH2-CH-(CH3)2, CH2-COO- A. 3 B. 4 C. 5 D. 6
B. 4
32. Which of the following is the best representation of an lysine in an aqueous solution at pH = 12? A. H₂N⁺-CH(CH₂CH₂CH₂CH₂NH₃⁺)-COOH B. H₂N-CH(CH₂CH₂CH₂CH₂NH₂)-COO⁻ C. H₂N⁺-CH(CH₂CH₂CH₂CH₂NH₃⁺)-COO⁻ D. H₂N-CH(CH₂CH₂CH₂CH₂NH₂)-COOH
B. H₂N-CH(CH₂CH₂CH₂CH₂NH₂)-COO⁻
17. Which of the following is the best representation of glutamate in an aqueous solution at pH = 1? A. H₃N⁺-CH(CH₂-CH₂-COO⁻)-COO⁻ B. H₃N⁺-CH(CH₂-CH₂-COOH)-COOH C. H₂N⁺-CH(CH₂-CH₂-COO⁻)-COOH D. H₃N⁺-CH(CH₂-CH₂-COO⁻)-COOH
B. H₃N⁺-CH(CH₂-CH₂-COOH)-COOH
72. Which of the following structural formulas is not an isomer of cis-2-pentene? A. 2-methyl-2-butene B. cis-2-pentene C. 2-methyl-1-butene D. cyclopentane E. trans-2-pentene
B. cis-2-pentene
21. Replication of DNA produces two daughter DNA molecules in which A. each daughter molecule contains two newly synthesized strands B. each daughter molecule contains one parent strand and one newly synthesized strand C. each daughter molecule contains both parent strands D. one daughter molecule contains both parent strands and one daughter molecule contains both newly synthesized strands
B. each daughter molecule contains one parent strand and one newly synthesized strand
24. What type of interaction forms when two nonpolar side chains are in close proximity? A. disulfide bridge B. hydrophobic interaction C. hydrogen bond D. hydrophilic interaction
B. hydrophobic interaction
30. Transcription and translation of the mRNA molecule in protein synthesis occurs in two different locations. Translation occurs A. in the nucleus. B. in the cytoplasm. C. in the mitochondria. D. at the cellular membrane
B. in the cytoplasm.
5. Which of the following best describes the side chain of amino acids listed below? H₃N⁺-CH(CH₂-OH)-COO⁻ A. acidic, polar B. neutral, polar C. basic, polar D. neutral, nonpolar
B. neutral, polar
1. Sickle cell anemia is a disease that results from a protein defect related to which of the following structures? A. secondary B. primary C. tertiary D. quaternary
B. primary
25. What type of interaction forms when two side chains containing an amino group and a carboxyl group are in close proximity? A. disulfide bridge B. salt bridge C. hydrogen bond D. hydrophobic interactions
B. salt bridge
19. A pleated sheet structure is an example of ______ protein structure. A. quaternary B. secondary C. primary D. teriary
B. secondary
34. Which of the following is not a neurotransmitter in the central nervous system? A. dopamine B. tryptophan C. serotonin D. norepinephrine
B. tryptophan
10. Which of the following is the best representation of the zwitterion for glycine in a neutral aqueous solution? A. H₃N⁺-CH(H)-COOH B. H₂N-CH(H)-COO⁻ C. H₃N⁺-CH(H)-COO⁻ D. H₂N-CH(H⁺)-COO⁻
C. H₃N⁺-CH(H)-COO⁻
7. Tertiary structures of proteins result from R-group interactions. Which of the following is not a R-group interaction? A. hydrogen bonds B. hydrophobic interactions C. disodium bridges D. salt bridges
C. disodium bridges
2. The tertiary structure of myoglobin reveals that nonpolar portions are primarily on the _____ of the molecule. A. oxygen-containing portion B. iron containing portion C. interior D. exterior
C. interior
15. The sequence of amino acids in a protein is called the _________ structure. A. tertiary B. secondary C. primary D. quaternary
C. primary
35. Which of the following structural features of amino acids is most responsible for differences in properties of proteins? A. the carboxyl group B. the amino group C. the side chain (R group) D. all are equally responsible
C. the side chain (R group)
12. Which of the following bases is only found in DNA? A. uracil B. cytosine C. thymine D. guanine
C. thymine
12. What is the correct condensed structural formula for 2,4-dimethyl-3-hexanone?
CH₃-C=O-CH(CH₃)-CH(CH₃)-CH₂-CH₃
19. Which of the following is a secondary alcohol?
CH₃-CH₂-CH(OH)-CH₂-CH₃
33. The bonding forces between two DNA strands in a double helix are A. peptide linkages. B. phosphate bonds. C. acetal bonds. D. hydrogen bonds.
D. hydrogen bonds.
27. The nucleic acid which carries information for protein synthesis from the nucleus to the cytoplasm is _____ . A. DNA B. rRNA C. tRNA D. mRNA
D. mRNA
31. A side chain (R group) containing CH2-OH would be classified as A. acidic B. neutral and nonpolar C. basic D. neutral and polar
D. neutral and polar
13. Which of the following comprise a nucleic acid backbone? A. sugar, phosphate, and base units B. sugar and base units C. phosphate and base units D. phosphate and sugar units
D. phosphate and sugar units
37. During transcription, the base adenine in DNA pairs with the base ____ in the new mRNA. A. guanine B. thymine C. cytosine D. uracil
D. uracil
11. Which of the following would *not* denature an egg? A. UV light B. strong acid C. heat D. water
D. water
100. Primary amine + Carboxylic acid -> a) amide b) amine c) amine salt d) carboxylic acid salt e) more than one correct answer
a) amide
58. Aldehyde reacts with an alcohol in the presence of an acid catalyst a) hemiacetal b) acetal c) alkene d) alcohol
a) hemiacetal
61. Carboxylic acid + ? → carboxylate ion + H3O+ a) water b)strong base c) alcohol d) carboxylic acid
a) water
25. What is the IUPAC name for the following molecule: H-O=CH₂-CH₂-CH₂-CH₂-CH₂=O-H? a. 1,5-pentanediol b. 1,5-dipentanol c. 5-hydroxy-1-pentanol d. 1,5-dihydroxypentane
a. 1,5-pentanediol
75. Which of the following is not a structural isomer of 1-pentene? a. 1-methylcyclobutene b. 2-methyl-2-butene c. 3-methyl-1-butene d. 2-pentene e. cyclopentane
a. 1-methylcyclobutene
6. What is the IUPAC name for the alcohol (CH₃)₂CHCH₂CH₂OH? a. 3-methyl-1-butanol b. isopentyl alcohol c. 3,3-dimethyl-1-propanol d. 2-isopropyl-1-ethanol e. isoamyl alcohol
a. 3-methyl-1-butanol
41. The IUPAC name for the compound is benzene ring, chlorine, and amine a. 4-chloroaminobenzene b. p-aminochlorobenzene c. 4-chloroaniline d. 1-amino-4-chloroaniline
a. 4-chloroaminobenzene
34. A hemiacetal is a compound in which: a. A hydroxy group and an alkoxy group (ether portion) are attached to the same carbon atom. b. A hydroxyl group and an alkoxy group (ether portion) are attached to adjacent carbon atoms. c. Two alkoxy groups (ether portions) are attached to the same carbon atom. d. Two alkoxy groups (ether portion) are attached to adjacent carbon atoms
a. A hydroxy group and an alkoxy group (ether portion) are attached to the same carbon atom.
89. For the following reaction, select a correct product characterization from the response list. CH₂=CH-CH₃ + H₂ -Ni-> a. An alkane is formed. b. An alkene is formed. c. An aromatic hydrocarbon is formed. d. Markovnikov's rule is needed to predict the major organic product.
a. An alkane is formed.
67. Which of the following statements is true concerning the two compounds 2,3-dimethylpentane and 2,4- dimethylpentane? a. Because the two compounds are structural isomers, they should have the same molecular formula. b. Because the two compounds are structural isomers, they should have identical chemical properties. c. Because the two compounds are structural isomers, they should have identical physical properties. d. Because the two compounds are enantiomers, they should rotate polarized light in opposite directions. e. Because the two compounds are geometric isomers, one should be cis and the other should be trans
a. Because the two compounds are structural isomers, they should have the same molecular formula.
42. Which of the following amines is paired with an incorrect IUPAC name? a. CH₃-CH(CH₃)-NH₂; 1-methylethanamine b. CH₃-CH₂-NH-CH₃; N-methylethanamine c. CH₃-CH₂-CH(NH₂)-CH₃; 2-butanamine; d. more than one correct response e. no correct response
a. CH₃-CH(CH₃)-NH₂; 1-methylethanamine
28. What is the predominating intermolecular force (IMF) that 3-chloropentanal would exhibit? a. Dipole-Dipole b. Hydrogen Bonding c. London Dispersion Forces (LDF) d. Does not have intermolecular forces
a. Dipole-Dipole
33. The structural difference between a hemiacetal and an acetal is the replacement of a. a -OH group with an -OR group b. an H atom with an -OR group c. an H atom with a -OH group d. a -OR group with a -OH group
a. a -OH group with an -OR group
93. dehydration of a primary alcohol, sulfuric acid, 180°C. a. alkene b. aldehyde c. ether d. ketone
a. alkene
94. dehydration of a secondary alcohol, sulfuric acid 180°C. a. alkene b. aldehyde c. ether d. ketone
a. alkene
99. Which of the following is a product of the acid hydrolysis of the following compound? CH₃-CH₂-CH(OH)(O-CH₃) a. methanol b. ethanol c. propanone d. more than one correct response e. no correct response
a. methanol
86. Carbonic acid levels are controlled through the ________. a. respiratory system b. renal system c. digestive system d. metabolic rate of cells
a. respiratory system
66. What is the molecular geometry around each carbon atom in a saturated hydrocarbon? a. tetrahedral b. trigonal planar c. trigonal bipyramidal d. linear e. bent
a. tetrahedral
60. Hemiacetal reacts with an alcohol in the presence of an acid catalyst a) hemiacetal b) acetal c) alkene d) alcohol
b) acetal
62. Ester + ? → acid salt + alcohol a) water b) strong base c) alcohol d) carboxylic acid
b) strong base
48. 2° amide a) one carbon group b) two carbon groups c) three carbon groups d) four carbon groups
b) two carbon groups R-C=O-N-H-R'
47. 2° amine a) one carbon group b) two carbon groups c) three carbon groups d) four carbon groups
b) two carbon groups R-N-H-R'
73. Which of the following names may represent either a cis or a trans isomer? a. 1-butene b. 1,2-dibromoethene c. 1,1,2-tribromoethene d. 1,1-dibromoethene e. 1-bromo-1-chloroethene
b. 1,2-dibromoethene
22. Which molecule has a higher boiling point: ethoxyethane or 2-butanol a. ethoxyethane b. 2-butanol
b. 2-butanol - the hydrogen in the alcohol allows it to hydrogen bond
26. What is the IUPAC name for the following molecule: CHO-CH₂-CH₂-CO-CH₂-CH₂-COOH? a. 1-carboxy-4-oxoheptanal b. 7-formyl-4-oxoheptanoic acid c. 1-carboxy-7-formyl-4-oxoheptane d. 1-carboxy-7-formyl-4-heptanone
b. 7-formyl-4-oxoheptanoic acid
32. Which of the following carboxylic acids is paired with its correct IUPAC name? a. CH₃-CH(Cl)-CH₂-COOH; 2-chloro-4-butanoic acid b. CH₃-CH₂-CH(Cl)-COOH; 2-chlorobutanoic acid c. CH₃-CH(Cl)-CH(Cl)-COOH; 2,3-dichloro-1-butanoic acid d. more than one correct response e. no correct response
b. CH3-CH2-CH(Cl)-COOH; 2-chlorobutanoic acid
43. The word amino would be present in the IUPAC name of which of the following compounds? a. CH₃-CH(NH₂)-CH₂-CH₃ b. CH₃-CH(NH₂)-CH₂-OH c. CH₃-CH(NH₂)-CH₂-Cl d. more than one correct response e. no correct response
b. CH₃-CH(NH₂)-CH₂-OH 2-aminopropanol
98. Oxidation of which of the following alcohols will produce a ketone? a. CH₃-CH₂-OH b. CH₃-CH(OH)-CH₃ c. CH₃-C(CH₃)₂OH d. more than one correct response e. no correct response
b. CH₃-CH(OH)-CH₃
51. Which of the following compounds is a secondary amine? a. 1,4-butanediamine b. N,2-dimethyl-3-pentanamine c. aminobenzene d. more than one correct response e. no correct response
b. N,2-dimethyl-3-pentanamine
106. Statements: (1) The compound ethylammonium chloride is an amine salt. (2) Amides, like amines, can be classified as primary, secondary, and tertiary. (3) The primary amines are insoluble in water. a. All three statements are true. b. Two of the three statements are true. c. Only one of the statements is true. d. None of the statements are true.
b. Two of the three statements are true. - Amides, like amines, can be classified as primary, secondary, and tertiary. - The compound ethylammonium chloride is an amine salt.
5. Which functional group does *not* contain an oxygen atom? a. aldehyde b. alkyne c. alcohol d. ester e. ketone
b. alkyne
57. Esters are produced (esterification) through the reaction of a. a ketone and an ether b. an alcohol and a carboxylic acid c. a carboxylic acid and an aldehyde d. a ketone and an alcohol
b. an alcohol and a carboxylic acid
78. What is the correct IUPAC name for the following molecule? a. trans-2-pentene b. cis-2-pentene c. trans-3-pentene d. cis-3-pentene e. pentene
b. cis-2-pentene
90. 1-hexyne + one Cl2 a. monochlorinated hydrocarbon b. dichlorinated hydrocarbon c. trichlorinated hydrocarbon d. tetrachlorinated hydrocarbon
b. dichlorinated hydrocarbon
30. The IUPAC name for the ester is CH₃-CH₂-CH₂-COO-CH₃ a. butyl methanoate b. methyl butanoate c. methyl butyl ester d. methyl carboxybutane
b. methyl butanoate
56. The ester obtained by reacting methanol and ethanoic acid is called a. methyl ethane b. methyl ethanoate c. ethyl methanoate d. ethane methanoate
b. methyl ethanoate
39. The compound CH₃-CH₂-NH-CH₃ is an example of a a. primary amine b. secondary amine c. tertiary amine d. primary amide
b. secondary amine
69. The compounds 2,3-dimethylbutane and 2-methylpentane are a. functional isomers. b. structural isomers. c. unrelated. d. geometric isomers. e. enantiomers
b. structural isomers.
21. What is the molecular shape of the carbon in the aldehyde functional group? a. tetrahedral b. trigonal planar c. bent d. trigonal bipryramidal e. linear
b. trigonal planar
45. 3° amine a) one carbon group b) two carbon groups c) three carbon groups d) four carbon groups
c) three carbon groups R-N-R'-R"
31. The IUPAC name for the compound is CH₃-CH(CH₃)-CH₂-COOH a. 2-methyl-4-butanoic acid b. 2-methyl-4-pentanoic acid c. 3-methylbutanoic acid d. 3-methylpentanoic acid
c. 3-methylbutanoic acid
80. What is the correct acid-conjugate base pair for the following equilibrium? H₂O(l) + HPO₄²- (aq) ⇌ H₂PO₄- (aq) + OH-(aq) a. H2O is an acid and HPO₄²- is its conjugate base. b. HPO₄²- is an acid and OH- is its conjugate base. c. H2O is an acid and OH- is its conjugate base. d. HPO₄²- is an acid and H₂PO₄- is its conjugate base. e. HPO₄²- is an acid and H2O is its conjugate base
c. H2O is an acid and OH- is its conjugate base.
105. Statements: (1) The reaction of an amine with water produces a basic solution. (2) Propanamide is a one-carbon amide, and ethanamide is a two-carbon amide. (3) Amides are basic in nature. a. All three statements are true. b. Two of the three statements are true. c. Only one of the statements is true. d. None of the statements are true
c. Only one of the statements is true. - Amides are basic in nature
74. What category of hydrocarbons contains a carbon-carbon triple bond? a. alkane b. aromatic c. alkyne d. alkene e. cycloalkane
c. alkyne
16. The functional group R-C=O-OH is characteristic of a. ketones. b. peptide linkages. c. carboxylic acids. d. aldehydes. e. esters.
c. carboxylic acids.
38. In the L- isomer of a Fischer projection of a monosaccharide, the -OH group furthest from the carbonyl is written a. on the left of the middle chiral carbon. b. on the right of the top chiral carbon. c. on the left of the bottom chiral carbon. d. on the left of the top chiral carbon. e. on the right of the bottom chiral carbon
c. on the left of the bottom chiral carbon
63. What would be the correct hemiacetal that would react with methanol to produce the sec-butyl methyl acetal of 3-hexanone a. sec-butyl methyl hemiacetal of 3-hexanone b. methyl hemiacetal of 3-hexanone c. sec-butyl hemiacetal of 3-hexanone d. 2-propanol and 3-hexanone e. methanol and 3-hexanone
c. sec-butyl hemiacetal of 3-hexanone
23. Rank the following molecules in highest to lowest boiling point: ethoxyethane, 2-butanol, butanal, butanone a. ethoxyethane, 2-butanol, butanal, butanone. b. ethoxyethane, butanal, butanone, 2-butanol. c. 2-butanol, butanal, butanone, ethoxyethane. d. 2-butanol, butanone, butanal, ethoxyethane. e. ethoxyethane, butanone, butanal, 2-butanol.
d. 2-butanol, butanone, butanal, ethoxyethane.
37. How do sugars form cyclic hemiacetals? a. A molecule of sugar reacts with an added alcohol. b. A molecule of sugar reacts with an added aldehyde. c. A sugar molecule decomposes. d. A molecule of sugar (or aldehyde) reacts with itself. e. Two molecules of a sugar react with one another.
d. A molecule of sugar (or aldehyde) reacts with itself.
64. Which molecule has a higher boiling point: butanoic acid, 1-butanol, ethoxyethane, butane, ethyl ethanoate? a. Ethyl ethanoate b. Butane c. Ethoxyethane d. Butanoic acid. e. 1-Butanol
d. Butanoic acid
70. What is the molecular formula of a straight-chain alkene with 8 carbon atoms? a. C8 H14 b. C8 H20 c. C8 H18 d. C8 H16 e. C8 H8
d. C8 H16
68. Based on the three condensed structural formulas below, which of the following statements is true? a. Formulas 2 and 3 describe the different compounds. b. Formulas 1 and 3 describe different compounds. c. Formulas 1 and 2 describe structural isomers. d. Formulas 1, 2, and 3 all describe the same compound. e. Formulas 2 and 3 describe positional isomers.
d. Formulas 1, 2, and 3 all describe the same compound.
104. Which of the following statements concerning the basic behavior of amines and amides is correct? a. Amines exhibit basic behavior. b. Both amines and amides exhibit basic behavior. c. Amides do not exhibit basic behavior. d. More than one correct response. e. No correct response.
d. More than one correct response. - Amines exhibit basic behavior, and both amines and amides exhibit basic behavior.
49. The IUPAC name for the compound is CH3-CH2-CO-NH-CH3 a. methylbutanamide b. methylpropanamide c. 1-methylaminopropanamide d. N-methylpropanamide
d. N-methylpropanamide
55. When an ester undergoes saponification (base hydrolysis), the reaction products are a. water + carboxylic acid ion b. a carboxylic acid + alcohol c. a ketone + alcohol d. a carboxylic acid salt + alcohol
d. a carboxylic acid salt + alcohol
54. Hydrolysis of an acetal in an acid solution would yield a. an aldehyde, a ketone, and one alcohol b. an aldehyde, a ketone, and two alcohols c. an aldehyde or a ketone and one alcohol d. an aldehyde or a ketone and two alcohols
d. an aldehyde or a ketone and two alcohols
87. The buffer that is adjusted to control acid-base balance in the blood is ________. a. plasma protein b. hemoglobin c. phosphate buffer d. carbonic acid buffer (bicarbonate)
d. carbonic acid buffer (bicarbonate)
17. What is the IUPAC name for the following compound? CH₃-CH₂-O-CH₂-CH₂-CH₃ a. propoxyethane b. methoxy-2-propane c. methoxy-1-propane d. ethoxypropane e. ethyl propyl ether
d. ethoxypropane
96. oxidation of a secondary alcohol. a. alkene b. aldehyde c. ether d. ketone
d. ketone
97. Hydrogenation or reduction, with a catalyst, of which of the following compounds would produce a four carbon alcohol? a. butanal b. butanone c. diethylketone d. more than one correct response e. no correct response
d. more than one correct response
29. Which of the following esters is paired with an incorrect IUPAC name for it? a. CH₃-CH₂-COO-CH₃; ethyl methanoate b. CH₃-COO-CH₂-CH₃; methyl ethanoate c. CH₃-CH₂-CH₂-COO-CH₃; propyl methanoate d. more than one correct response e. no correct response
d. more than one correct response - CH₃-COO-CH₃ = methyl ethanoate - HCOO-CH₂-CH₃ = ethyl methanoate - CH₃-COO-CH₂-CH₂-CH₃ = propyl methanoate
50. In which of the following amides is a -NH2 group present? a. ethanamide b. N-methylpropanamide c. 2-methylbutanamide d. more than one correct response e. no correct response
d. more than one correct response - ethanamide and 2-methylbutanamide
10. Which compound is a ketone? a. (CH₃)₂-COH-CH₃ b. (CH₃)₂-CH-C=O-OH c. (CH₃)₂-CHO-CH₃ d. (CH₃)₂-CH-CHO e. (CH₃)₂CH-C=O-CH₃
e. (CH₃)₂CH-C=O-CH₃
18. Name the following: CH₃-CH(OH)-CH₃ a. ethanol b. propanol c. butanol d. 2-butanol e. 2-propanol
e. 2-propanol
11. What is the IUPAC name for the compound having the following condensed structural formula? CH₃-C=O-CH(CH₃)-CH(CH₃)-CH₂-CH₃ a. 3,4-dimethylpentyl methyl ether b. 3,4-dimethyl-2-hexanol c. 3,4-dimethyl-5-hexanone d. 4-ethyl-3-methyl-2-pentanone e. 3,4-dimethyl-2-hexanone
e. 3,4-dimethyl-2-hexanone
79. Which of the following is an example of a condensed formula of an alkane? a. C3H8 b. c. d. e. CH3CH2CH2CH3
e. CH3CH2CH2CH3
76. Which of the following alkenes is capable of forming cis-trans isomers? a. (CH3)2C = CH2 b. (CH3)2C= CHBr c. CH3CH = CH2 d. CH3CH = CBr2 e. CHBr = CHCl
e. CHBr = CHCl
83. Which name-formula pair is incorrect? a. HNO3, nitric acid b. H3PO4, phosphoric acid c. HClO, hypochlorous acid d. HCl, hydrochloric acid e. HBr, perchloric acid
e. HBr, perchloric acid
84. Which of the following molecules is a strong electrolyte? a. C12H22O11 b. CH3OH c. HF d. H2CO3 e. HCl
e. HCl
82. The formula for hypochlorous acid is a. HClO4. b. HClO. c. HCl. d. HClO2. e. HClO
e. HClO
71. What category of hydrocarbons contains a carbon-carbon double bond? a. cycloalkane b. alkyne c. alcohol d. alkane e. alkene
e. alkene
36. Steroisomers that are chiral molecules that cannot be superimposed are called ________. a. chiral compounds b. allotropes c. cofactors d. geometrical isomers e. enantiomers
e. enantiomers
24. Rank the following molecules in lowest to highest solubility: ethoxyethane, 2-butanol, butanal, butanone a. ethoxyethane, 2-butanol, butanal, butanone. b. ethoxyethane, butanal, butanone, 2-butanol. c. 2-butanol, butanal, butanone, ethoxyethane. d. 2-butanol, butanone,butanal, ethoxyethane. e. ethoxyethane, butanone, butanal, 2-butanol.
e. ethoxyethane, butanone, butanal, 2-butanol.
