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

Subtopic:  AIDS |
 88%
From NCERT
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The cells of the malignant tumors exhibit 
1. Metastasis 
2. Contact inhibition 
3. High differentiation 
4. Slow proliferation 

Subtopic:  Cancer |
 91%
From NCERT
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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

Subtopic:  Drugs & Alcohol Abuse |
 85%
From NCERT
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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

Subtopic:  Drugs & Alcohol Abuse |
 75%
From NCERT
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Infection with Hemophilus influenza, especially in children, can cause:

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

Subtopic:  Pneumonia & Related Questions |
 91%
From NCERT
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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 

Subtopic:  Details of Immunity |
 79%
From NCERT
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A normal gene that codes for proteins tha 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

Subtopic:  Cancer |
 70%
From NCERT
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Which of the following Fungi is not capable of causing ringworm infection in man?

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

Subtopic:  Fungal Infection & Concept of Immunity |
 83%
From NCERT
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Opportunistic infections appear in AIDS patients when the HIV has destroyed :
1. Macrophages
2. T cytotoxic cells
3. T helper cells
4. B cells

Subtopic:  AIDS |
 93%
From NCERT
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Proto-oncogenes are seen in :
1. Normal cells
2. Malignant cells
3. Virus infected cells 
4. Cells exposed to X-rays

Subtopic:  Cancer |
 71%
From NCERT
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