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 

The receptors for opioids are found in :
1. GIT and CNS
2. CNS and CVS
3. CVS and GIT
4. GIT and Urinary system

Which of the following drugs acts by interfering with the transport of the neuro-transmitter 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 

The most standard HIV screening blood test:

1. Predicts how fast can one develop AIDS

2. Measures the amount of virus in the blood

3. Detects antibodies against the virus

4. Can be done only after appearance of opportunistic infections

Cancer is more common in older because:
1. Their immune systems have degenerated
2. Secretion of certain hormones is decreased
3. Cell replacement is not adequate 
4. They accumulate more mutations

Which parasitic worm can cause lung damage and severe malnutrition?
1. Ascaris
2. Ancylostoma
3. Wuchereria
4. Clonorchis

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