Q. No.An organic substance bound to an enzyme and essential for its activity is called:
1.
coenzyme
2.
holoenzyme
3.
apoenzyme
4.
isoenzyme
The enzyme amylase belongs to the class
| 1. | hydrolase |
| 2. | isomerase |
| 3. | transferase |
| 4. | lyases |
DNA has deoxyribose as the constituent sugar. The position where the sugar lacks oxygen is
1. 1
2. 2
3. 3
4. 4
The linkage that joins two adjacent nucleotides in RNA is
1. phosphate ester
2. phosphodiester
3. phosphate anhydride
4. N-glycoside
Heating may cause denaturation of enzyme or protein mainly by damaging its
| 1. | physical configuration |
| 2. | chemical structure |
| 3. | both physical configuration as well as chemical structure |
| 4. | other properties. |
Which of the following is incorrect?
| 1. | The hair protein, keratin, is synthesized from the amino acid methionine |
| 2. | Phospholipids act as carriers of small non polar molecules across the cell membrane |
| 3. | Dietary intake of PUFA decreases the serum cholesterol level in our body |
| 4. | Cobalt is a constituent of Vit B12 |
Which of the following vitamins is a coenzyme for amino acid and fatty acid metabolism?
| 1. | Vitamin B6 |
| 2. | Vitamin B12 |
| 3. | Vitamin B1 |
| 4. | Vitamin B2 |
The inhibition of succinic dehydrogenase by malonate is an example of
1. competitive inhibition
2. non-competitive inhibition
3. allosteric modulation
4. none of the above
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