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Material Type: Exam; Professor: Gaquere-Parker; Class: Survey of Chemistry II; Subject: Chemistry; University: University of West Georgia; Term: Spring 2014;
Typology: Exams
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General, Organic, and Biological Chemistry, 4e (Timberlake)
Chapter 19 Amino Acids and Proteins
19.1 Multiple-Choice Questions
A) provide structural components
B) stores the genetic information of a living organism
C) movement of muscles
D) catalyze reactions in the cells
E) transport substances through the bloodstream
Answer: B
Objective: 19.
Global Outcomes: GO
protein.
A) catalytic
B) structural
C) transport
D) storage
E) hormone
Answer: B
Objective: 19.
Global Outcomes: GO
A) protein.
B) carbohydrate.
C) globin.
D) triacylglycerols.
E) enkephalin.
Answer: A
Objective: 19.
Global Outcomes: GO
__________ protein.
A) transport
B) hormonal
C) catalytic
D) structural
E) contractile
Answer: C
Objective: 19.
Global Outcomes: GO
1
A) carboxyl group.
B) alpha carbon.
C) amino group.
D) side (R) group.
E) hydrogen bonding.
Answer: D
Objective: 19.
Global Outcomes: GO
A) polar.
B) hydrophobic.
C) hydrophilic.
D) acidic.
E) basic.
Answer: B
Objective: 19.
Global Outcomes: GO
acid?
A) eggs
B) milk
C) beans
D) steak
E) ham
Answer: C
Objective: 19.
Global Outcomes: GO
A) essential.
B) polar.
C) nonpolar.
D) complete.
E) incomplete.
Answer: A
Objective: 19.
Global Outcomes: GO
2
A) an amine group.
B) a carboxyl group.
C) a methyl group.
D) an alcohol group.
E) a thiol group.
Answer: A
Objective: 19.
Global Outcomes: GO
A) a net positive charge.
B) a net negative charge.
C) an overall charge of zero.
D) low solubility in water.
E) a negative charge on the nitrogen.
Answer: B
Objective: 19.
Global Outcomes: GO
A) a net positive charge.
B) a net negative charge.
C) an overall charge of zero.
D) low solubility in water.
E) a negative charge on the carboxyl group.
Answer: A
Objective: 19.
Global Outcomes: GO
4
Answer: E
Objective: 19.
Global Outcomes: GO
(pI = 3.2) at a pH 5.7 that is subjected to an electric current. __________ will migrate towards
the positive electrode(+).
A) Lysine
B) Tyrosine
C) Glutamic acid
D) All of the amino acids
Answer: C
Objective: 19.
Global Outcomes: GO
5
high pH?
Answer: A
Objective: 19.
Global Outcomes: GO
7
look like this.
Ala: - CH 3
; Ser: - CH 2
OH; Asp:
Answer: E
Objective: 19.
Global Outcomes: GO
8
each of lysine (Lys), threonine (Thr), and histidine (His)?
A) Lys-Thr-His
B) Lys-Thr-His, Lys-His-Thr, His-Thr-Lys, His-Lys-Thr, Thr-Lys-His, Thr-His-Lys
C) Lys-Thr-His, Lys-His-Thr, His-Lys-Thr, Thr-His-Lys
D) Lys-Thr-His, Lys-His-Thr, His-Lys-Thr
E) Lys-Thr-His, Lys-His-Thr
Answer: B
Objective: 19.
Global Outcomes: GO
A) alcohol
B) amine
C) amide
D) carboxylic acid
E) ketone
Answer: C
Objective: 19.
Global Outcomes: GO
A) peptide.
B) protein.
C) enzyme.
D) globulin.
E) hormone.
Answer: B
Objective: 19.
Global Outcomes: GO
A) dipeptide
B) triglyceride
C) a helix
D) amino acid
E) fatty acid
Answer: C
Objective: 19.
Global Outcomes: GO
10
two widely separated parts of a protein chain.
A) hydrogen bonds
B) disulfide bridges
C) salt bridges
D) hydrophilic interactions
E) hydrophobic interactions
Answer: A
Objective: 19.
Global Outcomes: GO
separate parts of the protein are held together
A) in a coil, by hydrogen bonding.
B) in random order, due to hydrophobic interactions.
C) in a triple helix.
D) in a double helix.
E) in a zig-zag conformation, by hydrogen bonding.
Answer: E
Objective: 19.
Global Outcomes: GO
A) a sweet taste.
B) a bitter taste.
C) extra caloric value.
D) pain-killing properties.
E) hormone activity.
Answer: D
Objective: 19.
Global Outcomes: GO
A) muscles and bone tissue.
B) brain and kidney tissue.
C) thalamus and spinal cord tissue.
D) heart and lung tissue.
E) pancreas and liver tissue.
Answer: C
Objective: 19.
Global Outcomes: GO
11
A) primary structure only.
B) two protein chains held together.
C) a globular structure.
D) primarily a β -pleated sheet structure.
E) primarily an α helix structure.
Answer: C
Objective: 19.
Global Outcomes: GO
A) protein chain.
B) small molecule within a protein.
C) helix area in the hemoglobin molecule.
D) pleated sheet area in the hemoglobin molecule.
E) oxygen molecule within the hemoglobin molecule.
Answer: B
Objective: 19.
Global Outcomes: GO
A) a disulfide bridge.
B) an oxygen carrier.
C) a reducing agent.
D) an α subunit.
E) one of the four protein subunits.
Answer: B
Objective: 19.
Global Outcomes: GO
A) one
B) two
C) three
D) four
E) five
Answer: D
Objective: 19.
Global Outcomes: GO
13
A) keratin.
B) collagen.
C) endorphin.
D) myosin.
E) casein.
Answer: A
Objective: 19.
Global Outcomes: GO
a globular protein?
N
Answer: C
Objective: 19.
Global Outcomes: GO
structure of a protein?
A) disulfide bonds
B) salt bridges
C) hydrogen bonds
D) hydrophobic interactions
E) peptide bonds
Answer: B
Objective: 19.
Global Outcomes: GO
14
A) peptide bonds and ionic bonds.
B) amide bonds and alkene bonds
C) hydrophobic interactions and peptide bonds.
D) ionic bonds and hydrophobic interactions.
E) ionic bonds and hydrogen bonds.
Answer: E
Objective: 19.
Global Outcomes: GO
A) ionic bonds and peptide bonds.
B) hydrophobic bonds and hydrogen bonds.
C) peptide bonds and hydrophobic bonds.
D) disulfide bonds and peptide bonds.
E) hydrogen bonds and disulfide bonds.
Answer: B
Objective: 19.
Global Outcomes: GO
A) changes the primary structure of a protein.
B) disrupts the secondary, tertiary, or quaternary structure of a protein.
C) is always irreversible.
D) hydrolyzes peptide bonds.
E) can only occur in a protein with quaternary structure.
Answer: B
Objective: 19.
Global Outcomes: GO
A) silver.
B) sodium.
C) barium.
D) iron.
E) calcium.
Answer: A
Objective: 19.
Global Outcomes: GO
16
A) releasing amino acids.
B) disrupting hydrophobic interactions.
C) changing the pH of the protein solution.
D) changing the temperature of the protein solution.
E) disrupting disulfide bonds.
Answer: E
Objective: 19.
Global Outcomes: GO
A) agitating the protein chains.
B) disrupting hydrogen bonds between R groups chains.
C) disrupting hydrophobic interactions within a protein chain.
D) removing helping molecules such as heme.
E) breaking disulfide bridges.
Answer: B
Objective: 19.
Global Outcomes: GO
19.2 Bimodal Questions
__________ protein.
A) transport
B) structural
C) storage
D) protection
E) catalytic
Answer: D
Objective: 19.
Global Outcomes: GO
A) hydrophilic
B) hydrophobic
C) nonpolar
D) aromatic
E) hydrocarbon
Answer: A
Objective: 19.
Global Outcomes: GO
17
structure.
A) pleated
B) primary
C) secondary
D) tertiary
E) quaternary
Answer: D
Objective: 19.
Global Outcomes: GO
A) pleated
B) primary
C) secondary
D) tertiary
E) quaternary
Answer: E
Objective: 19.
Global Outcomes: GO
A) primary
B) secondary
C) secondary and tertiary
D) tertiary and quaternary
E) secondary and quaternary
Answer: D
Objective: 19.
Global Outcomes: GO
function of a protein?
A) denaturation
B) saponification
C) hydrogenation
D) amidation
E) esterification
Answer: A
Objective: 19.
Global Outcomes: GO
19
A) saponification
B) reduction
C) hydrolysis
D) oxidation
E) denaturation
Answer: C
Objective: 19.
Global Outcomes: GO
19.3 Short Answer Questions
Answer: structural
Objective: 19.
Global Outcomes: GO
Answer: hemoglobin
Objective: 19.
Global Outcomes: GO
Answer: immunoglobulins
Objective: 19.
Global Outcomes: GO
__________ amino acids.
Answer: essential
Objective: 19.
Global Outcomes: GO
Answer: zero
Objective: 19.
Global Outcomes: GO
Answer: zero
Objective: 19.
Global Outcomes: GO
20