ANTIGEN QUIZ | EXAMIANS

What are the solutions prepared from weakened or dead microorganisms, viruses, or toxins that provide some immunity from diseases?

Antibiotics

Drugs

Histamines

Vaccines

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Plasma cells produce thousands of __________ that are released into the bloodstream

helper T cells

antigens

virus fragments

antibodies

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Antibodies bound to an invading microorganism activate the complement system via

classical pathway

metabolic pathway

Entner-Doudoroff pathway

Embden Meyerhof pathway

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What is the result of an abnormal response of the immune system to part of a person's own body?

An autoimmune disease

Passive immunity

Cancer

An allergic response

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Polysaccharides on the surface of infecting microorganisms can also activate complement directly in the absence of

antibody via the alternative pathway

antibody via metabolic pathway

None of these

antigen via the alternative pathway

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Which of the following is in the lymph nodes of a person battling a cold virus?

Trapped viruses that have been roaming the body

Huge numbers of white blood cells

Lymph ducts that enter and exit the nodes and Lymph fluid

All of these

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To detect a humoral immune response to influenza virus, it is possible to measure

dividing T cells in the draining lymph nodes

plasma cytokine levels

serum antibody titer

cytotoxicity of virus-infected cells in tissue culture

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To elicit the best antibodies to mouse MHC I, it should be injected into a

mouse of the same genetic background (strain)

goat

mouse of a different strain

rat

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In cellular immunity, T lymphocytes are responsible for the recognition and killing of foreign invaders. The cells are

cytotoxic T lymphocytes (CTL)

killer T cells

both (a) and (b)

None of these

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Immunological memory is due to

short lived macrophage that can recognize specific pathogens

long lived B cells that secrete a specific antigen

long lived B cells that secrete a specific antibody

short lived helper T cells that signal macrophage to divide

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