The partial pressures (in mm Hg) of oxygen (O2) and carbon dioxide (CO2) at alveoli (the site of diffusion) are :
1. pO2 = 95 and pCO2 = 40
2. pO2 = 159 and pCO2 = 0.3
3. pO2 = 104 and pCO2 = 40
4. pO2 = 40 and pCO2 = 45
Receptors for sperm binding in mammals are present on:
| 1. | Perivitelline space | 2. | Zona pellucida |
| 3. | Corona Radiata | 4. | Vitelline membrane |
Match the following
| List-I | List-II | ||
| (a) | Physalia | i. | Pearl oyster |
| (b) | Limulus | ii. | Portuguese Man of War |
| (c) | Ancylostoma | iii. | Living fossil |
| (d) | Pinctada | iv. | Hookworm |
Choose the correct answer from the options given below:
| Options: | (a) | (b) | (c) | (d) |
| 1. | ii | iii | iv | i |
| 2. | i | iv | iii | ii |
| 3. | ii | iii | i | iv |
| 4. | iv | i | iii | ii |
In a cross between a male and female, both heterozygous for sickle cell anaemia gene, what percentage of the progeny will be diseased?
| 1. | 25% | 2. | 100% |
| 3. | 50% | 4. | 75% |
Read the following statements.
| (a) | Metagenesis is observed in Helminths. |
| (b) | Echinoderms are triploblastic and coelomate animals. |
| (c) | Round worms have organ-system level of body organization. |
| (d) | Comb plates present in ctenophores help in digestion. |
| (e) | Water vascular system is characteristic of Echinoderms. |
Choose the correct answer from the options given below:
1. (a), (d) and (e) are correct
2. (b), (c) and (e) are correct
3. (c), (d) and (e) are correct
4. (a), (b) and (c) are correct
Which enzyme is responsible for the conversion of inactive fibrinogens to fibrins?
| 1. | Epinephrine | 2. | Thrombokinase |
| 3. | Thrombin | 4. | Renin |
Which one of the following belongs to the family Muscidae?
| 1. | Cockroach | 2. | House fly |
| 3. | Fire fly | 4. | Grasshopper |
| 1. | 4 | 2. | 32 |
| 3. | 8 | 4. | 16 |
A specific recognition sequence identified by endonucleases to make cuts at specific positions within the DNA is:
| 1. | Palindromic Nucleotide sequences | 2. | Poly(A) tail sequences |
| 3. | Degenerate primer sequence | 4. | Okazaki sequences |
Match List-I with List-II
| List-I | List-II | ||
| (a) | Vaults | (i) | Entry of sperm through the Cervix is blocked |
| (b) | IUDs | (ii) | Vas deferens is cut and tied |
| (c) | Vasectomy | (iii) | Phagocytosis of sperms within the Uterus |
| (d) | Tubectomy | (iv) | Fallopian tube is cut and tied |
Choose the correct answer from the options given below:
| (a) | (b) | (c) | (d) | |
| 1. | (ii) | (iv) | (iii) | (i) |
| 2. | (iii) | (i) | (iv) | (ii) |
| 3. | (iv) | (ii) | (i) | (iii) |
| 4. | (i) | (iii) | (ii) | (iv) |
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