What color is oxygenated blood?

a. yellow
b. pink
c. bright red
d. blue
e. purple


Answer: c

Biology & Microbiology

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Indicate whether the statement is true or false.

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The bacterial viruses that are released by a process termed extrusion are called

A. lysogenic viruses. B. temperate phages. C. filamentous phages. D. lambda viruses.

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Which term refers to a type of hypersensitivity to self-antigens?

a. autoimmunity b. immunodeficiency c. adaptive immunity d. innate immunity

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The most conclusive evidence that viruses cause cancers is provided by

A) finding oncogenes in viruses. B) the presence of antibodies against viruses in cancer patients. C) cancer following injection of cell-free filtrates. D) treating cancer with antibodies. E) some liver cancer patients having had hepatitis.

Biology & Microbiology