1. | Eosinophils | 2. | TH cells |
3. | B-lymphocytes | 4. | Basophils |
Which of the following is correct regarding AIDS causative agent HIV?
1. | HIV is an enveloped virus containing one molecule of single-stranded RNA and one molecule of reverse transcriptase |
2. | HIV is an enveloped virus that contains two identical molecules of single-stranded RNA and two molecules of reverse transcriptase |
3. | HIV is an unenveloped retrovirus |
4. | HIV does not escape but attacks the acquired immune response |
1. | B-lymphocytes | 2. | leucocytes |
3. | helper T-lymphocytes | 4. | thrombocytes |
At which stage of HIV infection does one usually show symptoms of AIDS?
1. | Within 15 days of sexual contact with an infected person |
2. | When the infected retrovirus enters host cells |
3. | When HIV damages a large number of helper T - Plymphocytes. |
4. | When the viral DNA is produced by reverse transcriptase. |
Assertion (A): | It is very important that the HIV/AIDS infected persons are not isolated from family and society. |
Reason (R): | HIV/AIDS is not an infectious disease. |
1. | Both (A) and (R) are True and (R) correctly explains Assertion. |
2. | (A) is True; (R) is False |
3. | (A) is False; (R) is True |
4. | Both (A) and (R) are True but (R) does not correctly explain (A). |