Pollinating insects are in part responsible for _____ diversity
A. flowering plant.
B. bird.
C. predatory insect.
D. herbivore.
E. none of these
A
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A substance that speeds up reactions in your body is known as
A) a placebo B) fiber C) a vitamin D) an enzyme
The role of oxygen in cellular respiration is to
a. combine with carbon atoms to form carbon dioxide. b. allow glycolysis to continue. c. act as the final electron acceptor. d. aid in the transport of pyruvate into the mitochondria. e. supply an energy molecule.
THC, the active ingredient in marijuana, alters
brain levels of
a. dopamine. b. norepinephrine. c. GABA. d. serotonin. e. all of these
Using your knowledge of the feedback loops of
human female hormones, which of the following results from high levels of estrogen and progesterone in the blood? a. lack of growth of the corpus luteum b. absence of monthly ovulation c. increased secretion of FSH d. increased levels of LH e. all of these