Q. No.Damage to thymus in a child may lead to
1. A reduction in haemoglobin content of blood
2. A reduction in stem cell production
3. Loss of antibody mediated immunity
4. Loss of cell mediated immunity
1. A reduction in haemoglobin content of blood
2. A reduction in stem cell production
3. Loss of antibody mediated immunity
4. Loss of cell mediated immunity
Humans have acquired an immune system that produces antibodies to neutralize pathogens. Still innate immune system is present at the time of birth because it:
| 1. | is very specific and uses different macrophages |
| 2. | produces memory cells for mounting a fast secondary response |
| 3. | has natural killer cells that can phagocytose and destroy microbes |
| 4. | provides passive immunity |
Coca alkaloid or cocaine is obtained from:
| 1. | Papaver somniferum | 2. | Atropa belladonna |
| 3. | Erythroxylum coca | 4. | Datura |
Consider the following statements regarding bird flu:
| I: | Viruses causing bird flu belong to Influenza virus A strain |
| II: | The most pathogenic strain of this virus causing bird flu is H1N1 |
| III: | Culling and vaccinating livestock is a short term strategy to prevent flu pandemic. |
| IV: | A human vaccine is available to control the spread of disease in human populations. |
Of the above statements, the correct are:
| 1. | I and III only | 2. | II and IV only |
| 3. | I, III and IV only | 4. | I, II, III and IV |
Which one of the following organisms is scientifically correctly named, correctly printed according to the International Rules of Nomenclature and is correctly described?
1. Musca domestica - The common house lizard, a reptile
2. Plasmodium falciparum - A protozoan pathogen causing the most serious type of malaria
3. Felis tigris - The Indian tiger, well protected in Gir forests.
4. E.coli - Full name Escherichia coli, a commonly occurring bacterium in human intestine
Primary lymphatic organs serve as the site for:
| 1. | antibody formation |
| 2. | lymph formation |
| 3. | lymphocytes to encounter and bind to antigens |
| 4. | lymphocyte formation and maturation |
Acid in stomach, saliva in the mouth, tears from eyes, all prevent microbial growth belong to which of the following barriers?
1. Physical barrier
2. Physiological barrier
3. Cellular barrier
4. Cytokine barrier
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
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 |
The drug called 'Heroin' is synthesized by:
| 1. | nitration of morphine | 2. | methylation of morphine |
| 3. | acetylation of morphine | 4. | glycosylation of morphine |
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