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
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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.
Restriction endonucleases recognize and clip DNA base sequences called ________.
A. introns B. palindromes C. genes D. exons E. codons
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
Inhibitors that fill the enzyme's active site and compete with the normal substrate are
a) noncompetitive. b) allosteric. c) competitive. d) conformational.