An anamnestic response involves aan

ATI RN

ATI RN Test Bank

An anamnestic response involves a/an

A. effector response B. high intensity C. rapid memory D. All of the above

Correct Answer: C

Rationale: Anamnestic (memory) response is rapid due to memory cells; effector and intensity are features, but C is specific.

The order of percent of total immunoglobulin in serum is

A. IgM, IgA, IgG, IgD, IgE B. IgG, IgA, IgM, IgE, IgD C. IgG, IgA, IgM, IgE, IgD D. IgG, IgA, IgM, IgD, IgE

Correct Answer: D

Rationale: Serum order is IgG (~80%), IgA, IgM, IgD, IgE ; not other sequences (A-C).

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.

B Cells are activated by

A. Complement B. Antibody C. Interferon D. Antigen

Correct Answer: D

Rationale: Antigens bind to B cell receptors to activate them, unlike complement, antibodies, or interferon (which modulate responses).

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.

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