Choose the correct statement about Passive Immunit

ATI RN

ATI RN Test Bank

Choose the correct statement about Passive Immunity?

A. This immunity causes reactions B. This immunity protection is immediate C. Passive immunity lasts only for a few weeks or months D. All of these

Correct Answer: D

Rationale: All (A, B, C) are true for passive immunity; thus, D is correct.

Clonal selection occurs when antigen is encountered by:

A. Basophils B. Eosinophils C. Mast cells D. T-cells

Correct Answer: D

Rationale: Clonal selection involves T and B cells proliferating after antigen encounter, not innate cells like basophils.

AIDS is such a deadly disease because the AIDS virus attacks and destroys

A. CD4+ T cells B. B cells C. CD8+ T cells D. macrophages

Correct Answer: A

Rationale: HIV targets CD4+ T cells , crippling immunity; CD8+ and macrophages are less primary targets.

All of the following are part of our antigen specific defense mechanisms except:

A. acute inflammation B. lymphocytes C. antibody production D. macrophages

Correct Answer: A

Rationale: Inflammation is nonspecific; lymphocytes and antibodies are specific.

Which of the following Cytokines can increase the body temperature directly?

A. Il-2 B. IL-3 C. IL-6 D. IL-8

Correct Answer: C

Rationale: IL-6 induces fever; IL-2 and IL-8 don't directly.

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