Cholesterol is a ________, which ________

A) terpene; is the basis for many animal and plant vitamins
B) fatty acid; functions in energy storage
C) steroid; is a component of eukaryotic membranes
D) steroid; is the basis for many animal and plant hormones
E) steroid; is a component of eukaryotic membranes and is the basis for many animal and plant hormones


Answer: E

Biology & Microbiology

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If the partial pressure of oxygen outside of a cell is 100 mmHg and the partial pressure of oxygen inside of a cell is 25 mmHg, which of the following statements is correct?

A. There will be a net movement of oxygen from outside the cell to inside the cell. B. There will be a net movement of oxygen from inside the cell to outside the cell. C. There will be no net movement of oxygen in either direction. D. There will be a net movement of carbon dioxide into the cell. E. There will be a net movement of carbon dioxide out of the cell.

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Detritivores are

a. bacteria. b. plants. c. fungi. d. animals. e. both bacteria and fungi.

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Histamine, serotonin, and bradykinin are all

A. mediators that increase chemotaxis. B. mediators of T-cell activity. C. fever inducers. D. mediators of B-cell activity. E. vasoactive mediators.

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The colony count of a 10^-8 plate in a dilution series is 162. What is the bacterial count in the original sample?

What will be an ideal response?

Biology & Microbiology