Chylomicrons are:
1. fat coated protein globules
2. micro-sized lipid molecules
3. protein coated fat globules
4. spherical aggregates of fatty acids
Genetic Drift occurs due to :
1. Natural selection
2. Sudden population migration
3. Continuous gene migration
4. Mutation
Bee-keeping helps to improve the yield of following crops Except ____________.
| 1. | Jowar | 2. | Sunflower |
| 3. | Apple | 4. | Mustard |
Normal sleep-wake cycle in a human body is maintained by the secretion of:
| 1. | Thyroid gland | 2. | Thymus gland |
| 3. | Pineal gland | 4. | Pituitary gland |
An intestinal hormone that stimulates the pancreas to release a watery secretion that is rich in bicarbonate ions:
| 1. | Cholecystokinin | 2. | Gastric Inhibitory Peptide |
| 3. | Enterokinin | 4. | Secretin |
Which biological process leads to a decrease in the fish-eating bird population near a water body containing toxicants from industrial drainage?
1. Algal bloom
2. Biochemical oxygen demand
3. Accelerated Eutrophication
4. Biomagnification
Select the correct match regarding adaptive radiation of Australian marsupials corresponding to placental mammals
1. Numbat-Flying Squirrel
2. Tasmanian Wolf - Bobcat
3. Marsupial mouse- Mole
4. Spotted Cuscus - Lemur
Terrestrial adaptations necessitated the production of:
| 1. | Highly toxic nitrogenous wastes like urea and uric acid |
| 2. | Lesser toxic nitrogenous wastes like urea and uric acid |
| 3. | Lesser toxic nitrogenous wastes like ammonia and urea |
| 4. | Highly toxic nitrogenous wastes like ammonia and urea |
Given below are two statements:
| Statement I: | Pyramid of energy is always upright and is the most efficient |
| Statement II: | Pyramid of biomass in sea is generally inverted |
In the light of the above statements, choose the most appropriate answer from the options given below:
| 1. | Statement I is correct but Statement II is incorrect |
| 2. | Statement I is incorrect but Statement II is correct |
| 3. | Both Statement I and Statement II are correct |
| 4. | Both Statement I and Statement II are incorrect |
Identify the properties of a good vector used in rDNA technology
| (a) | It should have origin of replication supporting a high copy number |
| (b) | It should have preferably more than '2' recognition sites |
| (c) | The restriction sites in vector should be in the antibiotic- resistant genes |
| (d) | It should have suitable marker genes |
| (e) | It should be easy to isolate and purify |
Choose the most appropriate answer from the options given below:
1. (a), (c) and (e) only
2. (c), (d) and (e) only
3. (a), (b) and (c) only
4. (a), (c) , (d) and (e) only
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