The class of antibodies involved in the allergic reaction is:
1. Ig A
2. Ig D
3. Ig E
4. Ig G

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

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

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

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

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

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

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

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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

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Alcohol is primarily metabolized in:

(1) Brain, which accounts for its mental effect

(2) Muscle, which accounts for its effects on movement

(3) Liver, where it disrupts glycolysis and Kreb's cycle

(4) Bloodstream, which explains its widespread effects

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

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