During photosynthesis, ATP molecules are generated by:
A. light striking the chlorophyll molecules
B. the Calvin cycle
C. the splitting of water
D. chemiosmosis
Answer: D
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When Ron Evans generated transgenic mice in which the gene PPAR-delta was constituitively active (i.e., always expressed), he found that these mice showed a shift from fast glycolytic fibers to slow oxidative fibers. One consequence of this change was that the transgenic mice
A. showed greater endurance in a running test. B. showed less endurance in a running test. C. had leg muscles with lower mitochondrial and capillary densities than wild-type (nontransgenic) mice. D. were more likely to become obese than wild-type (nontransgenic) mice. E. had muscles that were not as red as those of wild-type (nontransgenic) mice.
Dizygotic twins originate from two separate fertilization events
a. True b. False Indicate whether the statement is true or false
A muscle twitch is what?
What will be an ideal response?
If you place an animal cell in distilled water (water with no solutes in it) what will happen?
A) Nothing B) The cell will burst C) The cell will shrink D) the cell will swell but not burst