In the structure of DNA, the total amount of ____________________ and ____________________
equals the total amount of ____________________ and ____________________. Fill in the blank(s) with the appropriate word(s).
ANS: adenine; guanine; cytosine; thymine
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In higher eukaryotes, most aerobically generated ATP is produced by
A. a membrane-bound proton translocating ATP synthase during oxidative phosphorylation. B. the TCA cycle. C. glycolysis. D. all of these generate equal amounts of ATP.
Amebiasis
A. is caused by . B. often causes a bloody diarrhea. C. is an infection of the stomach. D. is restricted to temperate climates. E. is caused by AND often causes a bloody diarrhea.
The following are steps involved in abscisic acid's (ABA) role in stomata closure. Arrange them in the correct order of events. a. The resulting voltage change across the guard cell plasma membranes opens gated transport proteins that allow potassium ions to exit the cells
b. ABA binding to its receptor on a guard cell membrane causes the release of nitric oxide (NO). The NO activates calcium transport proteins and an influx of calcium occurs. c. Water follows the solutes by osmosis. d. The guard cells lose turgor and collapse against one another, closing the stoma. e. Calcium influx activates transport proteins that pump negatively charged malate and chloride ions out of the cells. Thus, the overall charge of cytoplasm increases, and the overall charge of extracellular fluid decreases.
When you boil egg white (albumin is protein) you have
A. inhibited the protein. B. denatured the protein. C. competed with the protein. D. optimized the protein.