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Genetics - Section 3 Multiple Questions and Answers.
| 11. | Fibrous protein such as silk fibroin consists of polypeptide chains arranged in | ||
| A. | α-helix | ||
| B. | β-pleated sheet | ||
| C. | β-helix | ||
| D. | none of these | ||
| 12. | α-helix has | ||
| A. | 3.4 amino acid residues/turn | ||
| B. | 3.6 amino acid residues/turn | ||
| C. | 3.8 amino acid residues/turn | ||
| D. | 3.0 amino acid residues/turn | ||
| 13. | Tertiary structure is maintained by | ||
| A. | peptide bond | ||
| B. | hydrogen bond | ||
| C. | di-sulphide bond | ||
| D. | All of these | ||
| 14. | Haemoglobin has | ||
| A. | primary structure | ||
| B. | secondary structure | ||
| C. | tertiary structure | ||
| D. | quaternery structure | ||
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