Biochemistry - Structure and Properties of Peptides
Exercise :: Structure and Properties of Peptides - Section 1
- Structure and Properties of Peptides - Section 1
| 16. |
Disulfide bonds most often stabilize the native structure of |
| A. |
extracellular proteins | | B. |
dimeric proteins | | C. |
hydrophobic proteins | | D. |
intracellular proteins |
Answer: Option A
Explanation:
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| 17. |
Secondary structure in protein refers to |
| A. |
linear sequence of amino acids joined together by peptide bond | | B. |
three dimensional arrangement of all amino acids in polypeptide chain | | C. |
regular folding of regions of the polypeptide chain | | D. |
protein made up of more than one polypeptide chain |
Answer: Option C
Explanation:
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| 18. |
Heme is the binding pocket of myoglobin and hemoglobin and is composed of |
| A. |
negatively charged residues | | B. |
polar residues | | C. |
hydrophobic residues | | D. |
positively charged residues |
Answer: Option C
Explanation:
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| 19. |
What is the effect of a decrease in pH on hemoglobin oxygen affinity? |
| A. |
Decrease in oxygen affinity | | B. |
Increase in oxygen affinity | | C. |
No effect on oxygen affinity | | D. |
Increase affinity in muscle cell otherwise decrease |
Answer: Option A
Explanation:
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| 20. |
What is the proportion of glycine residues in collagenous regions? |
| A. |
One-fourth | | B. |
One-third | | C. |
Half | | D. |
One-tenth |
Answer: Option B
Explanation:
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