Which one of the following statements is correct with reference to enzymes?
1. Holoenzyme= Apoenzyme+Coenzyme
2. Coenzyme= Apoenzyme+Holoenzyme
3. Holoenzyme= Coenzyme+ CO-factor
4. Apoenzyme=Holoenzyme+Coenzyme
A decrease in blood pressure/volume will not cause the release of?
| 1. | Atrial natriuretic factor | 2. | Aldosterone |
| 3. | ADH | 4. | Renin |
Which cells of "Crypts of Lieberkühn" secrete antibacterial lysozyme?
1. Paneth cells
2. Zymogen cells
3. Kupffer cells
4. Argentaffin cells
Which of the following are not polymeric?
| 1. | Proteins | 2. | Polysaccharides |
| 3. | Lipids | 4. | Nucleic acids |
Functional megaspore in an angiosperm develops into:
| 1. | Endosperm | 2. | Embryo sac |
| 3. | Embryo | 4. | Ovule |
Myelin sheath is produced by:
| 1. | Astrocytes and Schwann cells |
| 2. | Oligodendrocytes and Osteoclasts |
| 3. | Osteoclasts and Astrocytes |
| 4. | Schwann cells and Oligodendrocytes |
Attractants and rewards are required for:
1. Entomophily
2. Hydrophily
3. Cleistogamy
4. Anemophily
Receptor sites for neurotransmitters are present on:
1. Pre-synaptic membrane
2. Tips of axons
3. Post-synaptic membrane
4. Membrane of synaptic vesicles
Adult human RBCs are enucleated. Which of the following statement(s) is/ are the most appropriate explanation for this feature?
| (a) | They do not need to reproduce |
| (b) | They are somatic cells |
| (c) | They do not metabolize |
| (d) | All their internal space is available for oxygen transport |
1. Only (a)
2. (a),(c) and (d)
3. (b) and (c)
4. Only (d)
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