MCQOPTIONS
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MCQOPTIONS
This section includes 15 Mcqs, each offering curated multiple-choice questions to sharpen your Life Sciences knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
How many amino acid residues are there in per turn of α-helix? |
| A. | 3.6 |
| B. | 4.6 |
| C. | 3.0 |
| D. | 2.5 |
| Answer» B. 4.6 | |
| 2. |
How is the secondary structure of a protein stabilized? |
| A. | Van der wall forces |
| B. | Hydrogen bonding |
| C. | Covalent bond |
| D. | Hydrophobic bond |
| Answer» C. Covalent bond | |
| 3. |
What is the maximum wavelength that Tryptophan and tyrosine absorb? |
| A. | 280nm |
| B. | 260nm |
| C. | 257nm |
| D. | 230nm |
| Answer» B. 260nm | |
| 4. |
A solution of L-alanine (4.0g/50 ml of 6 N HCl) has a rotation of +1.61° in a 2dm polarimeter tube. Calculate the specific rotation of L-alanine in 6 N HCl. |
| A. | +15.1° |
| B. | +10.1° |
| C. | +11.1° |
| D. | +16.1° |
| Answer» C. +11.1° | |
| 5. |
WHAT_IS_THE_MAXIMUM_WAVELENGTH_THAT_TRYPTOPHAN_AND_TYROSINE_ABSORB??$ |
| A. | 280nm |
| B. | 260nm |
| C. | 257nm |
| D. | 230nm |
| Answer» B. 260nm | |
| 6. |
How many amino acid residues are there in per turn of α-helix?$# |
| A. | 3.6 |
| B. | 4.6 |
| C. | 3.0 |
| D. | 2.5 |
| Answer» B. 4.6 | |
| 7. |
How_is_the_secondary_structure_of_a_protein_stabilized?$ |
| A. | Van der wall forces |
| B. | Hydrogen bonding |
| C. | Covalent bond |
| D. | Hydrophobic bond |
| Answer» C. Covalent bond | |
| 8. |
In which amino acid Imidazole group, an aromatic ring found? |
| A. | Lysine |
| B. | Arginine |
| C. | Histidine |
| D. | Glutamate |
| Answer» D. Glutamate | |
| 9. |
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 |
| Answer» D. Leucine and lysine | |
| 10. |
Name the amino acid, which exists in two non-superimposable mirror images of each other. |
| A. | Epimer |
| B. | Anomer |
| C. | Enantiomer |
| D. | Chiral carbon |
| Answer» D. Chiral carbon | |
| 11. |
A solution of L-alanine (4.0g/50 ml of 6 N HCl) has a rotation of +1.61° in a 2dm polarimeter tube. Calculate the specific rotation of L-alanine in 6 N HCl.$ |
| A. | +15.1° |
| B. | +10.1° |
| C. | +11.1° |
| D. | +16.1° |
| Answer» C. +11.1¬¨¬®‚Äö√†√ª | |
| 12. |
Which of these are used to measure optical activity? |
| A. | Polarimeter |
| B. | Planometer |
| C. | Psychrometer |
| D. | Photometer |
| Answer» B. Planometer | |
| 13. |
Which of these amino acids are not optically active? |
| A. | Cysteine |
| B. | Lysine |
| C. | Arginine |
| D. | Glycine |
| Answer» E. | |
| 14. |
An amino acid is an amphoteric molecule. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 15. |
The general structure of all amino acids are same except for ___________ |
| A. | Lysine |
| B. | Glycine |
| C. | Proline |
| D. | Alanine |
| Answer» D. Alanine | |