Q. No.Metastasis shown by malignant tumors:
1.
is due to contact inhibition exhibited by cells.
2.
causes cells to remain undifferentiated.
3.
makes cancer cells susceptible to be killed by radiation.
4.
can start secondary tumors at distant sites in the body.
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After a few years of being diagnosed with HIV infection, a person develops tuberculosis, toxoplasmosis, diarrhea, and significant weight loss. This is most likely due to:
1. A cytokine storm in the body
2. A decrease in B lymphocytes count
3. A decrease in T helper cells count
4. A side effect of anti-retroviral therapy given
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Recombinant vaccine used to prevent Hepatitis B contains:
1. killed hepatitis B virus
2. live attenuated hepatitis B virus
3. antigenic polypeptide of hepatitis B virus
4. messenger RNA of yeast
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Anabolic steroids are frequently abused. Their side effects include all of the following except:
1. Masculinization in females
2. Mood swings and depression in females
3. Reduction in size of testicles in males
4. Reduction in size of the prostate in males
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Which of the following is not an auto-immune disorder in humans?
| 1. | Rheumatoid arthritis | 2. | Myasthenia gravis |
| 3. | Emphysema | 4. | Graves’ disease |
Identify the incorrect statement regarding the cell-mediated immune response:
| 1. | It is mediated through the T lymphocytes |
| 2. | A large number of antibodies are secreted by activated T cytotoxic cells |
| 3. | It responds against cancer cells and viral infections |
| 4. | It is responsible for graft rejection |
What word correctly denotes an enhanced reaction of the body's immune system to an antigen which is related to one previously encountered?
| 1. | Booster | 2. | Primary |
| 3. | Anamnestic | 4. | Magnified |
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Interferons are secreted by:
| 1. | Virus infected cells | 2. | The viruses themselves |
| 3. | Natural killer cells | 4. | T helper cells |
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