-
A.
A complete antigen
-
B.
A small molecule that can elicit an immune response only when attached to a larger carrier
-
C.
A type of antibody
-
D.
A type of T cell
Solution
A hapten is a small molecule that can elicit an immune response only when attached to a larger carrier.
Correct Answer:
B
— A small molecule that can elicit an immune response only when attached to a larger carrier
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-
A.
A type of antibody
-
B.
A foreign substance that induces an immune response
-
C.
A type of white blood cell
-
D.
A component of blood plasma
Solution
An antigen is a foreign substance that induces an immune response in the body.
Correct Answer:
B
— A foreign substance that induces an immune response
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Q. What is the primary function of antibodies?
-
A.
To destroy pathogens directly
-
B.
To bind to antigens and neutralize them
-
C.
To produce more antigens
-
D.
To activate T cells
Solution
The primary function of antibodies is to bind to antigens and neutralize them.
Correct Answer:
B
— To bind to antigens and neutralize them
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Q. What is the role of B cells in relation to antigens?
-
A.
They produce antibodies that bind to antigens
-
B.
They destroy antigens directly
-
C.
They present antigens to T cells
-
D.
They produce cytokines
Solution
B cells produce antibodies that specifically bind to antigens.
Correct Answer:
A
— They produce antibodies that bind to antigens
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Q. What is the term for the specific region on an antigen that is recognized by an antibody?
-
A.
Epitope
-
B.
Paratope
-
C.
Antibody site
-
D.
Antigenic determinant
Solution
The specific region on an antigen that is recognized by an antibody is called an epitope.
Correct Answer:
A
— Epitope
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Q. Which immune response is primarily activated by antigens?
-
A.
Innate immune response
-
B.
Adaptive immune response
-
C.
Inflammatory response
-
D.
Allergic response
Solution
The adaptive immune response is primarily activated by the presence of antigens.
Correct Answer:
B
— Adaptive immune response
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Q. Which of the following can act as an antigen?
-
A.
Proteins
-
B.
Carbohydrates
-
C.
Lipids
-
D.
All of the above
Solution
All of the above can act as antigens, as they can provoke an immune response.
Correct Answer:
D
— All of the above
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Q. Which of the following is NOT a characteristic of antigens?
-
A.
They can be proteins or polysaccharides
-
B.
They are always harmful to the body
-
C.
They can be recognized by the immune system
-
D.
They can be found on pathogens
Solution
Not all antigens are harmful; some can be harmless substances that still provoke an immune response.
Correct Answer:
B
— They are always harmful to the body
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Q. Which type of antigen is recognized by T cells?
-
A.
Exogenous antigens
-
B.
Endogenous antigens
-
C.
Both exogenous and endogenous antigens
-
D.
None of the above
Solution
T cells can recognize both exogenous and endogenous antigens.
Correct Answer:
C
— Both exogenous and endogenous antigens
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