Tobacco plant has been made resistant to the tobacco mosaic virus by :

(1) introducing T-DNA of Agrobacterium

(2) introducing a gene for virus coat protein

(3) introducing meristematic activity in somatic cells

(4) applying newer generation pesticides to the crops

An infant can get passive immunity from:

The receptors for the drug shown below are located in:
    

Common cold is not cured by antibiotics because it is

1. caused by a Gram-negaive bacterium

2. not an infectious disease

3. viral disease

4. caused by a Gram-positive bacterium

Maturation of lymphocytes takes place in

Which of the following represents the form of Plasmodium that is released from the erythrocyte by lysis?

1. Trophozoite

2. Schizont

3. Merozoite

4. Macrogametocyte

Which of the following is very effective sedative and pain killer?

1.  Cocaine.

2.  Heroin.

3.  Morphine.

4.  Cannabis extract.

Cellular oncogenes can be best explained as

1.  Mutated gene.

2.  Present in normal cells.

3.  Present only in the cells of benign tumour.

4.  Genes due to which cells loose the property of contact inhibition.

Vaccines are available for the disease like

I.   Polio.

II.  Diphtheria.

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.