Antibodies disappear very quickly in which immunit

ATI RN

ATI RN Test Bank

Antibodies disappear very quickly in which immunity?

A. Active immunity B. Naturally induced immunity C. Passive immunity D. Autoimmune response

Correct Answer: C

Rationale: Passive immunity has short-lived antibodies; active (A, D) is longer-lasting.

An epitope is

A. a B-cell B. a hapten C. an antibody D. the antigen determinant site

Correct Answer: D

Rationale: An epitope is the specific part of an antigen recognized by antibodies or T cells, not a cell or antibody itself.

Which of the following is not a characteristic of inflammation?

A. inactivation of macrophages B. increased vascular permeability and edema C. vasodilation D. pain

Correct Answer: A

Rationale: Inflammation activates macrophages, not inactivates them; it includes permeability, vasodilation, and pain.

Which type of T cell lyses cells that have been infected with viruses?

A. inducer T cells B. helper T cells C. cytotoxic T cells D. suppressor T cells

Correct Answer: C

Rationale: Cytotoxic T cells lyse infected cells; helper and suppressor have other roles.

Cellular adaptive immunity is carried out by ____________.

A. B cells B. T cells C. bone marrow D. neutrophils

Correct Answer: B

Rationale: T cells drive cellular immunity; B cells are humoral.

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