The human immunodeficiency virus targets:

A) helper T cells. B) all white blood cells.
C) bone marrow cells. D) lymph nodes.


Answer: A

Biology & Microbiology

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c. Phase-contrast d. Electron microscope e. Light microscope

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________ reactions release energy when electrons are removed from a substance

Fill in the blank with correct word.

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Given the comparative study of embryology, it is concluded that genes controlling embryonic development are essentially the same.

a. true b. false

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