Monoclonal antibodies recognize a single

ATI RN

ATI RN Test Bank

Monoclonal antibodies recognize a single:

A. Antigen B. Bacterium C. Epitope D. B cell

Correct Answer: C

Rationale: Monoclonal antibodies target a specific epitope (antigenic determinant), not a whole antigen or bacterium.

Which of the following are autoimmune diseases

A. heart disease B. Hashimoto's thyroiditis C. systemic lupus erythematosus D. B and C

Correct Answer: D

Rationale: Hashimoto's and SLE are autoimmune; heart disease and erythroblastosis are not, so D(B and C) is correct.

Immunoglobulins have two light chains and two heavy chains.

A. TRUE B. FALSE C. D.

Correct Answer: A

Rationale: Ig structure is two heavy, two light chains.

Which of the following statements is true about the Th-1 Cells?

A. They do not express CD4 B. They do not produce TNFðž¬ C. They do not activate macrophages D. They do not bind to soluble proteins

Correct Answer: D

Rationale: Th1 don't bind soluble antigens, use MHC II; they express CD4 and activate macrophages .

Foreign particles that are injected into the skin are likely to enter the lymphatic system

A. rapidly B. slowly C. not at all, because lymphatic valves prevent this D. not at all, because the skin lacks lymphatic capillaries

Correct Answer: A

Rationale: Skin has lymphatic capillaries that rapidly take up injected foreign particles.

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