Rhinovirus does not affect:

1.  Lungs 2.  Nose
3.  Pharynx  4.  Larynx

Subtopic:  Common Cold & Malaria Introduction |
 87%
From NCERT
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The mechanical carrier of the causative agent of amoebic dysentery is:

1.  A protozoan 2.  House fly
3.  Mosquito 4.  Rodent

Subtopic:  Amoebiasis |
 79%
From NCERT
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Aedes aegypti is not a vector for:

1.  Dengue 2.  Chikungunya
3.  Japanese encephalitis 4.  Yellow fever

Subtopic:  Common Cold & Malaria Introduction | Treatment & Life Cycle of Malaria |
 71%
From NCERT
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Which of the following is also sometimes called as mosquito fish?

1. Bombay duck 2. Gambusia
3. Pacific salmon 4. Pomfret
Subtopic:  Common Cold & Malaria Introduction |
 94%
From NCERT
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What is incorrect regarding innate immunity?

1. It is present at the time of birth
2. Physiological barriers prevent microbial growth
3. Natural killers, a cellular barrier, are a type of monocyte
4. It is a non-specific type of defense
Subtopic:  Details of Immunity |
 67%
From NCERT
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B cells:

1. Do not produce antibodies but help T cells produce them
2. Are pathogen specific but do not retain the memory of previous encounters
3. Lack ability to distinguish between self and non-self
4. Are involved in humoral immune response
Subtopic:  Details of Immunity |
 78%
From NCERT
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In an antibody molecule, an antigen binding site is located:

1. In the constant portion

2. At the C – terminus of a heavy chain

3. Between a light and a heavy chain

4. Between two heavy chains

Subtopic:  Details of Immunity |
 81%
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Active immunity develops when:

1. A host is exposed to antigens
2. Antigen presenting cells first encounter the antigen
3. T helper cells activate B cells to produce antibodies
4. When a child gets vaccinated for the first time
Subtopic:  Active & Passive Immunity |
 54%
From NCERT
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A foetus receiving some antibodies from mother through placenta is an example of:

1. Naturally acquired active immunity
2. Artificially acquired active immunity
3. Artificially acquired passive immunity
4. Naturally acquired passive immunity
Subtopic:  Active & Passive Immunity |
 81%
From NCERT
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The principle of immunization or vaccination is based on which property of the immune system?

1. Specificity

2. Memory

3. Ability to recognize self from non-self

4. Cooperation between innate and adaptive immunity

Subtopic:  Active & Passive Immunity | Human Immune System |
 87%
From NCERT
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