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, d) Water molecules do not interact with charged solutes.
e) All solutes increase water’s freezing point.
5. Dehydration synthesis (condensation) in forming a peptide bond:
a) consumes one water molecule per bond formed
b) produces one water molecule per bond formed
c) breaks peptide bonds and releases heat
d) requires oxidation of amino acids
e) converts peptide to amino acid monomers
6. Which level of protein structure is defined by interactions among R-groups (side chains)
and the formation of disulfide bridges, hydrogen bonds, ionic bonds, and hydrophobic
interactions? a) primary
b) secondary
c) tertiary
d) quaternary
e) peptide
7. The peptide bond forms between which functional groups of adjacent amino acids? a) R
groups (side chains)
b) amino group of one and carboxyl group of another (—NH₂ + —COOH →
—CONH—)
c) two carboxyl groups
d) two amino groups
e) sulfhydryl groups only
8. An alpha helix is stabilized mainly by:
a) ionic bonds between side chains
b) hydrogen bonds between backbone C=O and N–H groups four residues apart
c) disulfide bonds between cysteines far apart in sequence
d) hydrophobic interactions of side chains in the helix core
e) covalent crosslinks between helices
9. Which amino acid substitution is most likely to disrupt protein structure because it
introduces a rigid kink?
a) leucine → isoleucine
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https://www.cliffsnotes.com//study-notes/31488681
, d) Water molecules do not interact with charged solutes.
e) All solutes increase water’s freezing point.
5. Dehydration synthesis (condensation) in forming a peptide bond:
a) consumes one water molecule per bond formed
b) produces one water molecule per bond formed
c) breaks peptide bonds and releases heat
d) requires oxidation of amino acids
e) converts peptide to amino acid monomers
6. Which level of protein structure is defined by interactions among R-groups (side chains)
and the formation of disulfide bridges, hydrogen bonds, ionic bonds, and hydrophobic
interactions? a) primary
b) secondary
c) tertiary
d) quaternary
e) peptide
7. The peptide bond forms between which functional groups of adjacent amino acids? a) R
groups (side chains)
b) amino group of one and carboxyl group of another (—NH₂ + —COOH →
—CONH—)
c) two carboxyl groups
d) two amino groups
e) sulfhydryl groups only
8. An alpha helix is stabilized mainly by:
a) ionic bonds between side chains
b) hydrogen bonds between backbone C=O and N–H groups four residues apart
c) disulfide bonds between cysteines far apart in sequence
d) hydrophobic interactions of side chains in the helix core
e) covalent crosslinks between helices
9. Which amino acid substitution is most likely to disrupt protein structure because it
introduces a rigid kink?
a) leucine → isoleucine
This study source was downloaded by 1205308 from cliffsnotes.com on 02-04-2026 11:10:04 GMT -06:00
https://www.cliffsnotes.com//study-notes/31488681
