Staphylococcus bacteria are commonly present in the human nasal cavity but rarely cause disease of the upper respiratory system. This situation is an example of (commensalism/mutualism/parasitism)
What will be an ideal response?
commensalism
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In the Ames test for mutagenicity,
A) reverse mutations convert auxotrophs to prototrophs that survive. B) colonies are due to forward mutations that convert prototrophs to auxotrophs. C) cells are treated with mutagen and only cells with no mutations survive. D) cells are treated with excess amino acids and cells with mutations are killed. E) rat liver enzymes are present to protect cells from mutation.
Bully whippets are unable to synthesize:a
testosterone. b. growth hormone. c. estrogen. d. progesterone. e. myostatin
The most common sign of Hairy Cell Leukemia is "hairy" _____.
Fill in the blank(s) with the appropriate word(s).
Which occurs only in anaerobic metabolism of glucose?
A. lactate fermentation B. acetyl CoA formation C. citric acid cycle D. oxidative phosphorylation E. glycolysis