ANTIGEN QUIZ | EXAMIANS

Lymphocytes are activated by antigen in the

bone marrow

blood stream

liver

lymph nodes

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A pathogen can be a (n)

agent that causes a disease

virus

All of these

bacteria

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The ability of an antigen to induce an immune response does not depend on the antigen's

size

degree of aggregation

ability to enter the thyroid

dose

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Which of the following is incorrect with regard to antigen epitopes?

A protein molecule usually contains multiple epitopes

B cells bind only processed antigen epitopes

An epitope may be shared by two different antigens

Epitopes may be linear or assembled

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Antigen, when injected in the body activates its specific lymphocytes in the

spleen lymphoid tissue

blood circulation

draining lymph nodes

MALT (mucosa associated

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CD antigens

allow leukocytes to recognize antigen

function as receptors for cytokine and CAMs

are each expressed on only one cell type

are expressed on immune cells to mark them for separation

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Very low doses of antigen may induce

low zone immunity

hypersensitivity

low zone tolerance

immunological ignorance

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

carrier

hapten

mitogen

adjuvant

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The antibiotic penicillin is a small molecule that does not induce antibody formation. However, penicillin binds to serum proteins and forms a complex that in some people induces antibody formation resulting in an allergic reaction. Penicillin is therefore

a hapten

an antigen

both an antigen and a hapten

an immunogen

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During the lag period between antigen contact and detection of adaptive immunity,

innate immunity blocks the activation of adaptive immune effector cells

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

innate immune effectors are eliminating antigen

antigen is hidden from the immune system in macrophages

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