Which one of the following is not part of a transcription unit in DNA?
1. The inducer
2. A Terminator
3. A promoter
4. The structural gene
A certain road accident patient with an unknown blood group needs an immediate blood transfusion. His one doctor friend at once offers his blood. What was the blood group of the donor?
1. Blood group B
2. Blood group AB
3. Blood group O
4. Blood group A
Consumption of which one of the following foods can prevent the kind of blindness associated with vitamin-A deficiency?
| 1. | Flaver savr tomato | 2. | Canolla |
| 3. | Golden rice | 4. | Bt-brinjal |
The maximum amount of electrolytes and water (70-80%) from the glomerular filtrate is reabsorbed in which part of the nephron?
1. Ascending limb of the loop of Henle
2. Distal convoluted tubule
3. Proximal convoluted tubule
4. Descending limb of the loop of Henle
A person entering an empty room suddenly finds a snake right in front on opening the door. Which one of the following is likely to happen in his neurohormonal control system?
| 1. | Sympathetic nervous system activated releasing epinephrine and norepinephrine from adrenal medulla |
| 2. | Neurotransmitters diffuse rapidly across the cleft and transmit a nerve impulse |
| 3. | Hypothalamus activates the parasympathetic division of the brain |
| 4. | Sympathetic nervous system is activated releasing epinephrine and norepinephrine from the adrenal cortex |
Which one of the following is not a gaseous biogeochemical cycle in the ecosystem?
1. Sulphur cycle
2. Phosphorus cycle
3. Nitrogen cycle
4. Carbon cycle
A single strand of nucleic acid tagged with a radioactive molecule is called:
| 1. | Vector | 2. | Selectable marker |
| 3. | Plasmid | 4. | Probe |
Which one of the following options gives one correct example of convergent evolution and divergent evolution?
| Convergent Evolution | Divergent Evolution | |
| 1. | Eyes of octopus and mammals | Bones of forelimbs of vertebrates |
| 2. | Thorns of Bougainvillea and tendrils Cucurbita | Wings of butterflies and birds |
| 3. | Bones of forelimbs of vertebrates | Wings of butterfly and birds |
| 4. | Thorns of Bougainvillea and tendrils of Cucurbita | Eyes of Octopus and mammals |
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