Q. No.Which one of the following statements is correct with respect to immunity?
1.
The antibodies against smallpox pathogens are produced by T-lymphocytes
2.
Antibodies are protein molecules each of which has four light chains
3.
Rejection of a kidney graft is the function of B-lymphocytes
4.
Preformed antibodies need to be injected to treat the bite by a viper snake
The pathogen Microsporum responsible for ringworm disease in humans belongs to the same Kingdom of organisms at that of:
1. Ascaris, a roundworm
2. Taenia, a tapeworm
3. Wuchereria, a filarial worm
4. Rhizopus, a mould
Select the correct statement with respect to disease and immunisation:
| 1. | Injection of snake antivenom against snake bite is an example of active immunisation. |
| 2. | If due to some reason, B-and T-lymphocytes are damaged, the body will not produce antibodies against a pathogen. |
| 3. | Injection of dead/inactivated pathogens causes passive immunity. |
| 4. | Certain protozoans have been used to mass produce hepatitis B vaccine. |
Which one of the following organisms is scientifically correctly named, correctly printed according to the International Rules of Nomenclature, and correctly described?
| 1. | Plasmodium falciparum – a protozoan pathogen causing the most serious type of malaria |
| 2. | Felis tigris – The Indian tiger, well protected in Gir forests. |
| 3. | E.Coli – Full name Entamoeba coli, a commonly occurring bacterium in the human intestine |
| 4. | Musca domestica – The common house lizard, a reptile |
Identify the molecules (a) and (b) shown below and select the right option giving their source and use.
| (I) |  |
| (II) |  |
|
Molecule |
Source |
Use |
|
|
1. |
(II) Heroin |
Cannabis sativa |
Depressant and slows down body functions |
|
2. |
(II) Cannabinoid |
Atropa belladonna |
Produces hallucination |
|
3. |
(I) Morphine |
Papaver somniferum |
Sedative and painkiller |
|
4. |
(I) Cocaine |
Erythroxylum coca |
Accelerates the transport of dopamine |
Match the following columns and select the correct option:
| Column I | Column II | ||
| (i) | Typhoid | (a) | Haemophilus influenzae |
| (ii) | Malaria | (b) | Wuchereria bancrofti |
| (iii) | Pneumonia | (c) | Plasmodium vivax |
| (iv) | Filariasis | (d) | Salmonella typhi |
| Options: | (i) | (ii) | (iii) | (iv) |
| 1. | (d) | (c) | (a) | (b) |
| 2. | (c) | (d) | (b) | (a) |
| 3. | (a) | (c) | (b) | (d) |
| 4. | (a) | (b) | (d) | (c) |
A 25 year old female develops a runny nose after exposure to dust due to development of allergy. Which of the following antibodies is most likely to rise first in this condition?
1. IgG
2. IgM
3. IgE
4. IgD
Select the correct pair representing the diagnostic test for AIDS and its treatment
(1) ELISA/Anti-retroviral drugs
(2) Widal test/ antibiotics
(3) VDRL/antibiotics
(4) Widal test/ anti-retroviral drugs
Which of the following statements is incorrect?
1. MALT constitutes about 50% of the lymphoid tissue in human body
2. The envelope of AIDS virus encloses RNA genome
3. Cancer cells show the property of contact inhibition
4. Chronic use of drugs and alcohol can damage nervous system and liver
Complete the analogy by choosing the correct option.
Typhoid : Widal test : : HIV : _______
1. VDRL test
2. Schick test
3. ELISA test
4. Mantoux test
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