Biochemistry - Structure and Properties of Amino Acids
Exercise :: Structure and Properties of Amino Acids - Section 1
- Structure and Properties of Amino Acids - Section 1
| 11. |
Which of the following pairs of amino acids would carry a negative charge on their side chain at pH 8.0? |
| A. |
Asparagine & Glutamine | | B. |
Leucine & Glycine | | C. |
Histidine & Lysine | | D. |
Aspartate & Glutamate |
Answer: Option D
Explanation:
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| 12. |
In a polypeptide average mass of an amino acid residue is |
| A. |
110 daltons | | B. |
118 daltons | | C. |
80 daltons | | D. |
150 daltons |
Answer: Option A
Explanation:
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| 13. |
Which pair of amino acids absorbs the most UV light at 280 nm? |
| A. |
Threonine & Histidine | | B. |
Trp & Tyrosine | | C. |
Cystein & Asparagine | | D. |
Phenylalnine & Proline |
Answer: Option B
Explanation:
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| 14. |
Which of the following is a nonstandard amino acid? |
| A. |
Cysteine | | B. |
Isoleucine | | C. |
Hydroxyproline | | D. |
Histidine |
Answer: Option C
Explanation:
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| 15. |
Which of the following is an essential amino acid? |
| A. |
Tryptophan | | B. |
Methionine | | C. |
Lysine | | D. |
All of these |
Answer: Option D
Explanation:
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