Q. No.1. B-lymphocytes
2. leucocytes
3. helper T-lymphocytes
4. thrombocytes
A certain patient, X, is suspected to be suffering from acquired immune deficiency syndrome. Which diagnostic technique will you recommend for its detection?
| 1. | MRI | 2. | Ultra Sound |
| 3. | WIDAL | 4. | ELISA |
At which stage of HIV infection does one usually shows symptoms of AIDS?
| 1. | When viral DNA is produced by reverse transcriptase. |
| 2. | When HIV replicates rapidly in helper T-lymphocytes and damages a large number of these. |
| 3. | Within 15 days of sexual contact with an infected person. |
| 4. | When the infecting retrovirus enters host cells. |
Which one of the following statements is correct with respect to AIDS?
| 1. | HIV can be transmitted through eating food together with an infected person. |
| 2. | Drug addicts are the least susceptible to HIV infection. |
| 3. | AIDS patients are being fully cured cent per cent with proper care and nutrition. |
| 4. | The causative HIV retrovirus enters helper T-lymphocytes thus reducing their numbers. |
Which of the following is a pair of viral diseases?
1. Ringworm, AIDS
2. Common cold, AIDS
3. Dysentery, common cold
4. Typhoid, tuberculosis
HIV that causes AIDS first starts destroying:
1. B-lymphocytes
2. leucocytes
3. thrombocytes
4. helper T-lymphocytes
AIDS is caused by HIV that principally infects:
1. Activator B cells
2. T4 lymphocytes
3. Cytotoxic T cells
4. All lymphocytes
Which of the following statements is not true for retroviruses?
| 1. | Retroviruses carry the gene for RNA-dependent DNA polymerase |
| 2. | The genetic material in mature retroviruses is RNA |
| 3. | Retroviruses are causative agents for certain kinds of cancer in man |
| 4. | DNA is not present at any stage in the life cycle of retroviruses. |
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