In a __________, water or some nutrient moves from an environmental reservoir, through organisms,

then back to the environment. Fill in the blank(s) with the appropriate word(s).


biogeochemical cycle

Biology & Microbiology

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The process of racking, used in the production of wines, involves

A. depressurizing bottles. B. addition of carbon dioxide. C. removal of sediments. D. addition of sulfites.

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Restriction endonucleases recognize and clip DNA base sequences called ________.

A. introns B. palindromes C. genes D. exons E. codons

Biology & Microbiology

What best characterizes Crohn's diesease?

A) an ulcerated digestive tract B) inflamed blood vessels C) hard, accumulating feces D) a cramping muscularis muscle E) accumlating food in mucosa

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Inhibitors that fill the enzyme's active site and compete with the normal substrate are

a) noncompetitive. b) allosteric. c) competitive. d) conformational.

Biology & Microbiology