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Amino Acids and Proteins Multiple Questions and Answers.
| 21. | How is the secondary structure of a protein stabilized? | ||
| A. | Van der wall forces | ||
| B. | Hydrogen bonding | ||
| C. | Covalent bond | ||
| D. | Hydrophobic bond | ||
| 22. | What is the maximum wavelength that Tryptophan and tyrosine absorb? | ||
| A. | 280nm | ||
| B. | 260nm | ||
| C. | 257nm | ||
| D. | 230nm | ||
| 23. | In which amino acid Imidazole group, an aromatic ring found? | ||
| A. | Lysine | ||
| B. | Arginine | ||
| C. | Histidine | ||
| D. | Glutamate | ||
| 24. | Which of these are rare amino acid in a protein? | ||
| A. | Leucine and serine | ||
| B. | Lysine and glutamic acid | ||
| C. | Tryptophan and methionine | ||
| D. | Leucine and lysine | ||
| 25. | The two amino acids having R groups with a negative net charge at pH 7.0 are | ||
| A. | Aspartate and glutamate | ||
| B. | Arginine and histidine | ||
| C. | Cysteine and methionine | ||
| D. | Proline and valine | ||
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