Vaccines are available for the disease like
I. Polio.
II. Diptheria.
III. Pneumonia.
IV. Tetanus.

1. I, II, III & IV 

2. I and IV only

3. I only 

4. I, II & IV only

Odd one out ?
1. PMNL - neutrophils
2. Monocytes.
3. Natural killer cells.
4. Interferons.

Select correct sequence about life cycle of Plasmodium:

1. Sporozoites (human)$\to$RBCs$\to$Liver cells$\to$Gametocytes in blood$\to$Blood meal (female mosquito)$\to$Multiply (female mosquito)$\to$Sporozoites (female mosquito)

2. Sporozoiters (human)$\to$Liver cells$\to$RBCs$\to$Gametocytes in blood$\to$Blood meal (female mosquito)$\to$multiply (female mosquito)$\to$Sporozoites (female mosquito)

3. Gametocytes (female mosquito)$\to$Gametocytes (human)$\to$RBCs$\to$Multiply$\to$Sporozoites$\to$Blood meal (human)$\to$Sporozoites (female mosquito)$\to$Multiply (female mosquito)$\to$Gametocytes (female mosquito)

4. Sporozoites (human)$\to$Liver cells$\to$Gametocytes in blood$\to$RBCs$\to$Blood meal(female mosquito)$\to$Multiply (female mosquito)$\to$Sporozoites (female mosquito)

When a quick immune response is required, we can

1. Directly inject weakened pathogen at time of emergency.

2. Directly inject preformed antigens.

3. Directly inject preformed antibodies.

4. Directly inject immunosuppressants.

Elephantiasis in man is caused by

1. Ancylostoma duodenale

2. Ascaris lumbricoides

3. Dracunculus medinensis

4. Wuchereria bancrofti

Salmonella typhi causes:

1. An acute infection of intestine that causes high fever and weakness

2. Enlargement of spleen and pain in stomach

3. Rose coloured rashes on the body

4. All of the above

Read the following statements about cancer and mark the incorrect ones

Choose the correct option regarding the drug, its source, and its effect on the body

Read the following statements:

(i) The main antibody produced as a result of allergic reaction is lgA.

(ii) Modern-day lifestyle has resulted in lowering immunity and more sensitivity to allergens.

(iii) Recombinant DNA technology has allowed the production of antigenic polypeptides of pathogens in bacteria or yeasts.

(iv) Allergy is suppressed due to the release of histamine and serotonin.

(v) The drugs like anti-histamines, adrenaline, and steroids quickly reduce the symptoms of allergy.

Which of the above statements are incorrect?

1. (ii), (iii), (v)

2. (i), (iv)

3. (ii), (v)

4. (ii), (iii)

In which of the following organ immature lymphocytes differentiate into antigen sensitive lymphocytes?
1. Thymus
2. Spleen
3. Peyer’s patches
4. Appendix