Antigen

Question: A pathogen can be a (n)
[A].

agent that causes a disease

[B].

virus

[C].

bacteria

[D].

All of these

Answer: Option D

Explanation:

No answer description available for this question.

Question: CD antigens
[A].

allow leukocytes to recognize antigen

[B].

are each expressed on only one cell type

[C].

are expressed on immune cells to mark them for separation

[D].

function as receptors for cytokine and CAMs

Answer: Option D

Explanation:

No answer description available for this question.

Question: Which of the following is incorrect with regard to antigen epitopes?
[A].

An epitope may be shared by two different antigens

[B].

A protein molecule usually contains multiple epitopes

[C].

B cells bind only processed antigen epitopes

[D].

Epitopes may be linear or assembled

Answer: Option C

Explanation:

No answer description available for this question.

Question: A virus vaccine that can activate cytotoxic T cells must contain
[A].

a high dose of virus particles

[B].

an adjuvant to stimulate T cell division

[C].

live virus

[D].

virus peptides

Answer: Option C

Explanation:

No answer description available for this question.

Question: Very low doses of antigen may induce
[A].

hypersensitivity

[B].

immunological ignorance

[C].

low zone tolerance

[D].

low zone immunity

Answer: Option C

Explanation:

No answer description available for this question.

Question: A molecule that can be covalently linked to a non-immunogenic antigen to make it an immunogen is called a (n)
[A].

adjuvant

[B].

carrier

[C].

hapten

[D].

mitogen

Answer: Option B

Explanation:

No answer description available for this question.

Question: Lymphocytes are activated by antigen in the
[A].

blood stream

[B].

bone marrow

[C].

liver

[D].

lymph nodes

Answer: Option D

Explanation:

No answer description available for this question.

Question: For specific antigen recognition by T cells,
[A].

antigen is bound by a T cell membrane antibody

[B].

denaturation of antigen does not reduce epitope recognition

[C].

MHC molecules are not required

[D].

antigen exposure during T cell maturation is required

Answer: Option B

Explanation:

No answer description available for this question.

Question: During the lag period between antigen contact and detection of adaptive immunity,
[A].

antigen is hidden from the immune system in macrophages

[B].

innate immune effectors are eliminating antigen

[C].

innate immunity blocks the activation of adaptive immune effector cells

[D].

new B and T cells with the appropriate antigen specificity must be produced in the bone marrow

Answer: Option B

Explanation:

No answer description available for this question.

Question: Antigen, when injected in the body activates its specific lymphocytes in the
[A].

blood circulation

[B].

draining lymph nodes

[C].

MALT (mucosa associated

[D].

spleen lymphoid tissue

Answer: Option B

Explanation:

No answer description available for this question.