When guard cells are ________ a stomatal pore opens between them.
A. flaccid
B. turgid
C. overextended
D. solute depleted
E. ionically charged
Answer: B
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To reduce or eliminate disease-/spoilage-causing organisms, food is often subjected to
A. heat. B. chemical additives. C. radiation. D. cold. E. All of the choices are correct.
Which of the following is an adaptive response of a predator?
a. nonretractable claws of cheetahs b. grasshopper mouse plunging the chemical spraying end of a beetle into the ground c. all of the choices d. koala digestive tracts being tough enough to handle eucalyptus leaves
Some cells of the stomach and brain produce which
of the following hormones when the stomach is empty? a. leptin b. ghrelin c. gastric juice d. pancreatic hormones e. cholecystokinin
In the atmosphere, ____________________depletion in certain regions of the globe contributes to increased levels of
UV radiation exposure, which in turn is associated with increases in skin cancer frequency. Fill in the blank(s) with the appropriate word(s).