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Biochemistry - Structure and Properties of Peptides

Exercise : Structure and Properties of Peptides - Section 1
  • Structure and Properties of Peptides - Section 1
26.
Hemoglobin has quaternary structure and is made up of
six polypeptide chains, two α-chains and four β-chains
two polypeptide chains, one α-chains and one β-chains
four polypeptide chains, two α-chains and two β-chains
five polypeptide chains, two α-chains and three β-chains
Answer: Option
Explanation:
No answer description is available. Let's discuss.
27.
When pO2 = Kd of myoglobin, the fractional saturation (YO2) is about
0.1
0.5
0.9
1.7
Answer: Option
Explanation:
No answer description is available. Let's discuss.
28.
Peptides in the fully extended chain conformation
have Y = F = 180°
do not occur in nature
also have a cis geometry in their peptide bonds
are equivalent to the (3-sheet structure
Answer: Option
Explanation:
No answer description is available. Let's discuss.
29.
The oxygen in hemoglobin and myoglobin is bound to
the iron atom in the heme group
the nitrogen atoms on the heme
histidine residues in the protein
lysine residues in the protein
Answer: Option
Explanation:
No answer description is available. Let's discuss.
30.
Which of the three subunits of the G proteins binds GDP and GTP?
Alpha
Beta
Gamma
Delta
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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