Answer the following questions true (T) or false (F)

1. B cell proliferation occurs when an antigen binds to a B-cell receptor on the surface of a specific B-cell clone.

2. IgM is the first antibody secreted by plasma cells when the body is invaded by a pathogen.

3. A lack of memory cells mainly affects the primary immune response.


1. FALSE
2. TRUE
3. FALSE

Anatomy & Physiology

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The ______ are the male sex hormones.

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Which component of the ECG represents the depolarization of the ventricles?

A) QRS complex B) R-R interval C) P-R segment D) S-T segment

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Anatomy & Physiology