Basic Concepts of Immunology-Vaccines NEET Questions

Biology - Biology and Human Welfare

Basic Concepts of Immunology-Vaccines MCQ Questions


7.
Acquired immunity differs from innate immunity in that it:
A.
Is mediated only by macrophages
B.
Acts only against viruses
C.
Is present from birth and is non-specific
D.
Is pathogen-specific and characterised by memory
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ANSWER :
D. Is pathogen-specific and characterised by memory
8.
The highly intensified response on the second encounter with the same pathogen is called:
A.
Allergic response
B.
Anamnestic (secondary) response
C.
Primary response
D.
Innate response
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ANSWER :
B. Anamnestic (secondary) response
9.
The two types of lymphocytes responsible for acquired immune response are:
A.
Neutrophils and macrophages
B.
B-lymphocytes and T-lymphocytes
C.
Eosinophils and basophils
D.
Monocytes and natural killer cells
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ANSWER :
B. B-lymphocytes and T-lymphocytes
10.
Which of the following statements about T-lymphocytes is correct?
A.
They themselves do not secrete antibodies but help B cells to produce them
B.
They are produced in spleen
C.
They directly secrete antibodies into blood
D.
They have no role in graft rejection
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ANSWER :
A. They themselves do not secrete antibodies but help B cells to produce them
11.
Antibodies are produced by:
A.
Macrophages
B.
Natural killer cells
C.
B-lymphocytes
D.
T-lymphocytes
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ANSWER :
C. B-lymphocytes
12.
An antibody molecule is represented as:
A.
H2L2
B.
HL
C.
H4L4
D.
H3L3
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ANSWER :
A. H2L2