Match the following RNA polymerases with their transcribed products:
Column-I
Column-II
(a)
RNA polymerase I
(i)
tRNA
(b)
RNA polymerase II
(ii)
rRNA
(c)
RNA polymerase III
(iii)
hnRNA
Select the correct option from the following:
Options:
(a)
(b)
(c)
1.
i
iii
ii
2.
i
ii
iii
3.
ii
iii
i
4.
iii
ii
i
Column-I
Column-II
(a)
RNA polymerase I
(i)
tRNA
(b)
RNA polymerase II
(ii)
rRNA
(c)
RNA polymerase III
(iii)
hnRNA
Select the correct option from the following:
In a marriage between a male with blood group A and a female with blood group B, the progeny had either blood group AB or B. What could be the possible genotype of the parents?
1. IA i (Male) ; IB IB (Female)
2. IA IA (Male) ; IB IB (Female)
3. IA IA (Male) ; IB i (Female)
4. IA i (Male) ; IB i(Female)
A population of a species invades a new area. Which of the following condition will lead to Adaptive Radiation?
| 1. | Area with a large number of habitats having very low food supply |
| 2. | Area with a single type of vacant habitat |
| 3. | Area with many types of vacant habitats |
| 4. | Area with many habitats occupied by a large number of species |
Identify A, B and C in the diagrammatic representation of the mechanism of hormone action.
Select the correct option from the following:
| 1. | A = Steroid Hormone; B = Hormone receptor Complex; C = Protein |
| 2. | A = Protein Hormone; B = Receptor; C = Cyclic AMP |
| 3. | A = Steroid Hormone; B = Receptor; C = Second Messenger |
| 4. | A = Protein Hormone; B = Cyclic AMP; C = Hormone-receptor Complex |
Humans have acquired an immune system that produces antibodies to neutralize pathogens. Still innate immune system is present at the time of birth because it:
| 1. | is very specific and uses different macrophages |
| 2. | produces memory cells for mounting a fast secondary response |
| 3. | has natural killer cells that can phagocytose and destroy microbes |
| 4. | provides passive immunity |
Which of the following statements is not correct?
| 1. | An action potential in an axon does not move backward because the segment behind is in a refractory phase. |
| 2. | Depolarization of hair cells of cochlea results in the opening of the mechanically gated Potassium- ion channels. |
| 3. | Rods are very sensitive and contribute to daylight vision. |
| 4. | In the knee-jerk reflex, stimulus is the stretching of muscle and response is its contraction. |
Match the following joints with the bones involved:
| Column-I | Column-II | ||
| (a) | Gliding joint | (i) | Between carpal and metacarpal of thumb |
| (b) | Hinge joint | (ii) | Between Atlas and Axis |
| (c) | Pivot joint | (iii) | Between the Carpals |
| (d) | Saddle joint | (iv) | Between Humerus and Ulna |
Select the correct option from the following:
| (a) | (b) | (c) | (d) | |
| 1. | (iii) | (iv) | (ii) | (i) |
| 2. | (iv) | (i) | (ii) | (iii) |
| 3. | (iv) | (ii) | (iii) | (i) |
| 4. | (i) | (iii) | (ii) | (iv) |
Which of the following diseases is an auto-immune disorder?
1. Myasthenia gravis
2. Arthritis
3. Osteoporosis
4. Gout
Artificial light, extended work-time and reduced sleep-time disrupt the activity of:
1. Thymus gland
2. Pineal gland
3. Adrenal gland
4. Posterior pituitary gland
Which of the following conditions will stimulate parathyroid gland to release parathyroid hormone?
1. Fall in active Vitamin D levels
2. Fall in blood Ca+2 levels
3. Fall in bone Ca+2 levels
4. Rise in blood Ca+2 levels
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