Smoking addiction is harmful because it produces polycyclic aromatic hydrocarbons, which cause 
(1) reduction in oxygen transport

(2) increase in blood pressure 

(3) cancer 

(4) retardation of growth of foetus

The main reason why antibiotics could not solve all the problems of bacteria mediated diseases is 
(1) insensitivity of the individual following prolonged exposure to antibiotics

(2) inactivation of antibiotics by bacterial enzymes

(3) decreased efficiency of the immune system

(4) the development of mutant strains resistant to antibiotics.

Which of the following sets includes all bacterial disease?
(1) Cholera, typhoid, mumps

(2) Tetanus, tuberculosis, measles

(3) Malaria, mumps, polimyelitis

(4) Diphtheria, leprosy, plague

The binding of antibodies to the antigens to produce a large insolube complex is known as 
(1) antibody-antigen complex

(2) agglutination 

(3) immunisation 

(4) suppressor cell reaction.

Intermediate host is absent in the infection of

(1) Plasmodium

(2) Entamoeba

(3) Trypanosoma

(4) filarial worm.

Cytokines that provide non specific immunity against virus are
1. interleukin
2. tumour necrosis
3. colony stimulating
4. interferon

What does 'T' stands for in DPT vaccine?

(1) Tuberculosis

(2) Typhoid

(3) Trachoma

(4) Tetanus

Which one is correct?

(1) Salmonella typhi and Haemophilus influenzae cause pneumonia

(2) Widal test is done for malaria

(3) Entamoeba histolytica causes amoebiasis.

(4) Wuchereria causes enterobiasis.

CD-4 receptor is associated with

(a) AIDS
(c) malaria
(b) cancer
(d) pneumonia

Which of the following statements is correct?
A. Common cold - Droplet Infection.
B. Typhoid - Contaminated food & water.
C. AIDS - Shaking hands.
D. Ringworm - Using infected towels.
1. A and B
2. C and D
3. A and C
4. A, B and D