Antibodies are

ATI RN

ATI RN Test Bank

Antibodies are

A. amino acids B. lipids C. carbohydrates D. proteins

Correct Answer: D

Rationale: Antibodies are proteins made of polypeptide chains, specific to adaptive immunity, not amino acids, lipids, or carbohydrates.

Which innate immune cell efficiently kills antibody coated parasites?

A. Macrophages B. Eosinophils C. Neutrophils D. Basophils

Correct Answer: B

Rationale: Eosinophils target antibody-coated parasites (e.g., helminths) via degranulation, unlike macrophages, neutrophils, or basophils.

Which of the components listed below forms the B cell antigen receptor?

A. IgG antibody B. Ig Î± C. Ig Î² D. All of the above

Correct Answer: D

Rationale: The BCR includes IgÎ± and IgÎ² signaling proteins with the antibody (e.g., IgG), making all components correct.

Developing T cells first express pre T cell receptors:

A. At the double positive T cell stage B. After negative selection C. When they are double negative thymocytes D. After positive selection

Correct Answer: C

Rationale: Pre-TCRs appear in double-negative thymocytes, before CD4/CD8 expression.

B-cells do which of the following?

A. Act as antigen-processing cells B. Respond to antigens by making antibodies C. Proliferate and differentiate into plasma cells D. All of the above

Correct Answer: D

Rationale: B-cells process antigens , produce antibodies , and become plasma cells , so all are true.

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