Typhoid fever is caused by a species of 

1. Streptococcus

2. Staphylococcus 

3. Salmonella

4. Mycobacterium 

HIV is a member of a group of viruses called

1. bacteriophages

2. geminiviruses

3. lysogenic viruses

4. retroviruses

Humoral immunity system is mediated by

1. B-cells

2. T-cells

3. NK-cell

4. plasma cells

The type of immunoglobulin present in the foetus are
(1) IgD

(2) IgE

(3) IgG

(4) IgM

Leukaemia is caused by

(1) Ca 40

(2) Sr 90

(3) caesium

(4) iodine

An autoimmune disease is
(1) B-lymphocytes induced

(2) haemophillia

(3) myasthenia gravis

(4) None of the above

The main function of the white blood cell in the human intestine system is to 
1. Combat and destroy antigenic particles
2. produce antigens to combat antibodies
3. carry oxygen around the body 
4. transport antigens to B memory cells in the lymph nodes 

Blood cells that increase in number during allergic conditions like asthma are 
(1) neutrophils

(2) basophils

(3) eosinophils

(4) lymphocytes

LSD is

(1) hallucinogenic

(2) sedative

(3) stimulant

(4) tranquiliser

Monoclonal antibodies are

(1) obtained from a cell and act on one antigen

(2) obtained from a group of cells and act on more than one antigens

(3) obtained from a group of same type of cells and act on single antigen

(4) obtained from a group of same type of cells and act on more than one antigens