WINDOWS NT QUIZ | EXAMIANS

A virus vaccine that can activate cytotoxic T cells must contain

virus peptides

an adjuvant to stimulate T cell division

live virus

a high dose of virus particles

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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

an antigen

a hapten

both an antigen and a hapten

an immunogen

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

An epitope may be shared by two different antigens

Epitopes may be linear or assembled

A protein molecule usually contains multiple epitopes

B cells bind only processed antigen epitopes

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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

mitogen

adjuvant

hapten

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

antigen is hidden from the immune system in macrophages

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

innate immunity blocks the activation of adaptive immune effector cells

innate immune effectors are eliminating antigen

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Very low doses of antigen may induce

low zone tolerance

low zone immunity

hypersensitivity

immunological ignorance

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Lymphocytes are activated by antigen in the

bone marrow

blood stream

lymph nodes

liver

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For specific antigen recognition by T cells,

antigen exposure during T cell maturation is required

MHC molecules are not required

antigen is bound by a T cell membrane antibody

denaturation of antigen does not reduce epitope recognition

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A pathogen can be a (n)

virus

All of these

agent that causes a disease

bacteria

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CD antigens

are expressed on immune cells to mark them for separation

are each expressed on only one cell type

allow leukocytes to recognize antigen

function as receptors for cytokine and CAMs

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