The immune-deficiency becomes marked once the HIV starts destroying 
1. Macrophages
2. T helper cells
3. B lymphocytes
4. Natural killer cells 

The cells of the malignant tumors exhibit 
1. Metastasis 
2. Contact inhibition 
3. High differentiation 
4. Slow proliferation 

Which of the following drugs acts by interfering with the transport of the neurotransmitter Dopamine?
1. Morphine
2. Hashish
3. Cocaine
4. Atropine

Infection with Hemophilus influenza, especially in children, can cause:

1. Diptheria
2. SARS
3. Pneumonia
4. Dysentery

The secretion of antibodies by B lymphocytes provides:
1. Passive immunity 
2. Humoral immunity 
3. cell mediated immunity 
4. Innate immunity 

A normal gene that codes for proteins that help to regulate cell growth and differentiation and can, due to mutations or increased expression, lead to neoplastic transformation of cells, is called as:
1. Oncogene
2. Proto-oncogene
3. V-onc
4. Psuedogene

The early screening test for HIV infection is :
1. ELISA
2. Western Blot
3. Culture of HIV
4, Detection of opportunistic infections

Which of the following Fungi is not capable of causing ringworm infection in a man?

1. Microsporum
2. Trichophyton
3. Epidermophyton
4. Trichoderma

Opportunistic infections appear in AIDS patients when the HIV has destroyed :
1. Macrophages
2. T cytotoxic cells
3. T helper cells
4. B cells

Proto-oncogenes are seen in :
1. Normal cells
2. Malignant cells
3. Virus infected cells 
4. Cells exposed to X-rays