Exercise: Structure And Properties Of Peptides

Questions for: Structure And Properties Of Peptides

The heme is held in place by a bond between
A:
the Fe2+ and cysteine
B:
the Fe3+ and histidine
C:
the Fe3+ and cysteine
D:
the Fe2+ and histidine
Answer: D
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The different orders of protein structure are determined by all of the following bond types except
A:
peptide bonds
B:
phospho-diester bonds
C:
disulfide bridges
D:
hydrogen bonds
Answer: B
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If the F and Y angles of each peptide unit in a protein are known, which of the following may also be determined?
A:
Complete secondary structure
B:
Complete tertiary structure
C:
Complete quaternary structure
D:
Thermodynamic stability
Answer: A
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Which of the three subunits of the G proteins binds GDP and GTP?
A:
Alpha
B:
Beta
C:
Gamma
D:
Delta
Answer: A
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The oxygen in hemoglobin and myoglobin is bound to
A:
the iron atom in the heme group
B:
the nitrogen atoms on the heme
C:
histidine residues in the protein
D:
lysine residues in the protein
Answer: A
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