Histamine ________

A) causes local blood vessels to dilate
B) attracts natural killer cells
C) stimulates the release of defensive proteins
D) repels phagocytic cells


A

Biology & Microbiology

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A recipient cell that is temporarily diploid for a portion of the genome during the replacement process is called a(n) ________.

A. exogenote B. merozygote C. endogenote D. None of the choices are correct.

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The greatest concentration of nitrogen on the planet Earth is found in:

a. living organisms, including bacteria b. the atmosphere c. soil minerals d. fossil fuels e. oceans

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Helicobacter pylori has been associated with ____

a. irritable bowel syndrome b. duodenal ulcers c. peptic ulcers d. HPV e. GERD

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What might be the predominant lifestyle on Earth?

A. parasitism B. mutualism C. predation D. commensalism E. herbivory

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