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Microbiology
Learn the toughest concepts covered in Microbiology with step-by-step video tutorials and practice problems by world-class tutors.
20. Adaptive Immunity
Immune Tolerance
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1
concept
Immune Tolerance
3m
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2
concept
Football Analogy for Immune Tolerance
3m
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3
concept
Central vs. Peripheral Tolerance
11m
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4
Problem
The most important function of peripheral tolerance is to:
A
Eliminate mature B & T lymphocytes that bypassed central tolerance from reacting to self-cells.
B
Eliminate inactive B & T lymphocytes from peripheral blood.
C
Eliminate self-reacting B & T lymphocytes before they enter central tolerance.
D
Eliminate mature B & T lymphocytes from the bone marrow.
5
Problem
Where do T cells undergo central tolerance selection?
A
Bone marrow.
B
Pancreas.
C
Thymus.
D
Liver.
E
Brain.
6
Problem
What is immunological tolerance?
A
The ability of the immune system to remove lymphocytes that recognize and attack foreign antigens.
B
The ability of the immune system to differentiate between self and non-self antigens.
C
The ability of the immune system to create antibodies that most effectively bind foreign antigens.
D
The ability of the immune system to tolerate a certain amount of pathogens before triggering an immune response.
7
Problem
Which of the following is NOT a consequence of the immune system lacking an immune tolerance?
A
The immune system cells will only recognize and attack foreign antigens.
B
The immune system cells will recognize and attack foreign and self-antigens.
C
The immune system will attack self-cells causing autoimmune diseases.
D
The immune system will not remove T and B lymphocytes that bind to self-antigens.