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

Which of the following pathogens is not transmitted by vector?
1. Salmonella typhi 
2. Alpha virus 
3. Plasmodium 
4. Wuchereria bancrofti

When plants/animals are infected with virus, they may produce an anti-viral substance that is capable of inhibiting the multiplication of that virus. Identify the correct name of this substance.
1. Virion
2. Antiviron
3. Antigen
4. Interferon

Refer to the given figure depicting a diseased condition in humans and name the worm causing this disease.

1. Epidermophyton floccosum
2. Ascaris lumbricoides
3. Wuchereria bancrofti
4. Entamoeba histolytica

Refer to the given figure and choose the organism not related to the condition shown here.

1. Microsporum

2. Trichophyton

3. W. malayi

4. Epidermophyton

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 

Interferon is a glycoprotein which is: 

1. Antibacterial

2. Antifungal

3. Antiviral

4. All of these

Antigen binding site in an antibody is found between 

1. two light chains

2. two heavy chains

3. one heavy and one light chain 

4. either between two light chains or between one heavy and one light chain depending

upon the nature of antigen.

Adults of Wuchereria bancrofti attacks

1. exeretory system

2. nervous system 

3. digestive system

4. lymphatic system.

Ingestion of food and water contaminated with infective eggs is the primary route of

infection for 

1. Taenia solium

2. Wuchereria bancrofti

3. Trichinella sp.

4. Ascaris lumbricoides