Which of the following is a possible function of a terpene?

A) cell surface receptor
B) vitamin
C) enzyme
D) motility
E) structure


Answer: B

Biology & Microbiology

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Conversion of Vitamin D by the kidneys to an active form is an example of the urinary system's

homeostatic interaction with which system? a. skeletal b. cardiovascular c. digestive d. endocrine e. muscular

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Why do gallstones form in the gallbladder?

A) The gallbladder doesn't function at all. B) The gallbladder removes too much water from bile. C) The gallbladder converts bile into crystallized calcium propionate. D) The gallbladder fills with dead hepatocytes.

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The evolution of biochemical molecules started on Earth ____.

A. after the appearance of prokaryotic cells B. long before any cells emerged C. after the appearance of eukaryotic cells D. after the appearance of eukaryotic cells but before the appearance of multicellular organisms E. after the appearance of multicellular organisms

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Control of the lac operon and lactose utilization in bacteria is (check all that apply)

A. controlled by the expression of three downstream genes. B. not induced in the presence of both glucose and lactose. C. only induced when there is glucose but not lactose. D. preferentially utilizing lactose as a carbon source. E. is a negative control, mediated by a repressor.

Biology & Microbiology