What type of immunity is induced by the hepatitis B vaccine?
1. naturally acquired active immunity.
2. naturally acquired passive immunity.
3. artificially acquired active immunity.
4. artificially acquired passive immunity.

Subtopic:  Fungal Infection & Concept of Immunity |
 51%
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Besides helper T cells, what are two other types of cells that HIV infects?
1. macrophages and brain cells
2. B cells and liver cells
3. plasma cells and neutrophils
4. cytotoxic T cells and brain cells

Subtopic:  AIDS |
 63%
From NCERT
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When searching for a donor for an organ transplant, doctors try to match the __________ of the donor and recipient as closely as possible.

(1) antibodies

(2) blood type

(3) MHC proteins

(4) Leukocytes

Subtopic:  Human Immune System |
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In a series of immune system experiments, the thymus glands were removed from baby mice. Which of the following would you predict as a likely result?

(1) The mice suffered from numerous allergies.

(2) The mice never developed cancerous tumors.

(3) The mice suffered from autoimmune diseases.

(4) The mice readily accepted tissue transplants.

Subtopic:  Human Immune System |
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The antigen-binding sites of an antibody molecule are formed from the molecule's variable regions. Why are these regions described as variable?

1.  They can change their shapes to fit different antigens.
2.  They change their shapes when they bind to an antigen.
3.  Their specific shapes are unimportant.
4.  The amino acid sequences of these regions vary widely among antibodies from different B cells.
Subtopic:  Details of Immunity |
 50%
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Chemicals produced by virus-infected cells that alert neighboring cells to prepare a defense are called:

(1) antibodies

(2) interferons

(3) cytokines

(4) antigens

Subtopic:  Details of Immunity |
 91%
From NCERT
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The earlier concept of Health was

1. A state of body and mind

2. Where there was a balance of certain humor

3. A state of mind, body, and heart

4. More than one option

Subtopic:  Introduction |
 67%
From NCERT
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The assertion by Hippocrates about health was

1.    Same as that of Indian Ayurveda system

2.    Different from Indian Ayurveda System

3.   Supported by some other early Greeks

4.   More than one option

Subtopic:  Introduction |
 64%
From NCERT
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The person with Black bile were considered to be

1.    Belonged to black pigmentation group

2.    Belonged to hot personality

3.   Belonged to hot personality having fevers

4.   Belonged to black pigmentation will be prone to fever

Subtopic:  Introduction |
 74%
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The good humor hypothesis of health was disproved by

1.    The discovery of blood circulation by William Harvey using experimental methods

2.    Demonstration of normal body temperature in people with black bile using a thermometer

3.   Both 1 and 2

4.   Observing vector born disease

Subtopic:  Introduction |
 84%
From NCERT
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