Q. No.Which one of the following is not a property of cancerous cells, whereas the remaining three are?
1. They compete with normal cells for vital nutrients
2. They do not remain confined in the area of formation
3. They divide in an uncontrolled manner
4. They show contact inhibition
In which one of the following options the two examples are correctly matched with their particular type of immunity?
| Examples | Type of immunity | |
| (a) | Polymorphonuclear leukocytes and monocytes | Cellular barriers |
| (b) | Anti-tetanus and anti-snake bite injection | Active immunity |
| (c) | Saliva in mouth and tears in eyes | Physical barriers |
| (d) | Mucus coating of the epithelium lining the urinogenital tract and HCl in the stomach | Physiological barriers |
2. (b)
3. (c)
4. (d)
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. |
Select the correct statement from the ones given below:
| 1. | Barbiturates when given to criminals make them tell the truth |
| 2. | Morphine is often given to persons who have undergone surgery as a painkiller |
| 3. | Chewing tobacco lowers blood pressure and heart rate |
| 4. | Cocaine is given to patients after surgery as it stimulates recovery |
Which one of the following statements is correct?
| 1. | Patients, who have undergone surgery are given cannabinoids to relieve pain |
| 2. | Benign tumours show the property of metastasis |
| 3. | Heroin accelerates body functions |
| 4. | Malignant tumours may exhibit metastasis |
HIV that causes AIDS first starts destroying:
1. B-lymphocytes
2. leucocytes
3. thrombocytes
4. helper T-lymphocytes
A person suffering from a disease caused by Plasmodium, experiences chill and fever at the time when?
1. The sporozites released from RBCs are being rapidly killed and broken down inside spleen
2. The trophozites reach maximum growth and give out certain toxins
3. The parasite after its rapid multiplication inside RBCs ruptures them, releasing the stage to enter fresh RBCs
4. The microgametocytes and megagametocytes are being destroyed by the WBCs
A person who met with a road accident is likely to develop tetanus, can be immunised by administering
1. Weakened germs
2. Dead germs
3. Preformed antibodies
4. Wide spectrum antibiotics
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