Proteins that act as ____________________ catalyze biochemical reactions and are vital components of the cell’s
metabolic pathways. Fill in the blank(s) with the appropriate word(s).
enzymes
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Synthetic plastics are
A) oxidized completely to carbon dioxide after a few years under aerobic conditions. B) partially degraded into branched chain and polyaromatic hydrocarbons. C) degraded slowly under anoxic conditions. D) extremely recalcitrant to microbial degradation.
True or false: If speciation is seen primarily as a result of genetic drift, then you would expect to see a bell-shaped distribution of most phenotypic characteristics
A. true B. false
Some viruses cause disease; they act as __________
in humans. Fill in the blank(s) with the appropriate word(s).
The tectorial membrane is
a. connective tissue. b. epithelial tissue. c. muscle tissue. d. nervous tissue. e. a jellylike substance.