Courtship is often dependent on what?
A. social releasers
B. a stimulus/response chain
C. an alarm call
D. taxis
E. size and colors
B. a stimulus/response chain
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The Calvin cycle of a plant exposed to light during the day that is suddenly put in the dark
A. cannot run, as it requires light energy directly. B. can still run as long as there is ATP, CO2, and NADPH present. C. runs in a different place in the plant. D. uses a different source of carbon.
During stress, ACTH is produced by the _______ and acts on target cells in the ______
a. hypothalamus; adrenals b. hypothalamus; pituitary c. pituitary; hypothalamus d. pituitary; adrenals e. adrenals; hypothalamus
Which of the following is true of water
molecules when water becomes ice?
a. the water molecules jiggle more b. their structure becomes less rigid c. the water molecules pack less densely d. hydrogen bonds between water molecules readily break e. evaporation of water molecules happens more readily
The ATP generated from cellular respiration is not sufficient to drive the Calvin cycle in plants, even if appropriate levels of NADPH and CO2 are present. Why not?
A. Cellular respiration and photosynthesis do not happen in the same cells in plants B. Breaking down sugar to provide the energy needed to synthesize sugar would be a futile cycle C. Plants do not undergo cellular respiration D. The Calvin cycle requires more ATP than can possibly be made from cellular respiration