cAMP levels decrease when __________. This results in __________ of CAP
a. lactose levels increase; activation
b. lactose levels decrease; inhibition
c. glucose levels increase; inhibition
d. glucose levels decrease; activation
e. glucose levels decrease; inhibition
c
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In plants, the microtubules organizing centers are comprised of microtubules
a. True b. False
Which interval would likely show the higher ratio of double to single chiasmata?
The Q gene locus is 10 map units from the R gene locus which is 40 map units from the S gene locus: Q——10 m.u.——R——40 m.u.——S A) Q-R B) R-S C) The ratios would be the same in the two intervals. D) Two chiasmata never occur in the same interval.
In the United States, what fraction of fresh
water taken from the environment is used to irrigate agricultural fields? a. 0. b. 20. c. 40. d. 60. e. 80.
Which statement describes the leaf epidermis?
a. Its cells lack chloroplasts. b. Some of its cells perform photosynthesis. c. Its cell walls are thin. d. Its cells are opaque. e. It has only a single layer.