In the Northern Hemisphere, the summer ________ occurs when solar rays fall directly on the Tropic of Cancer
Fill in the blank(s) with correct word
solstice
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Vibrio cholerae primarily infects the
A) stomach. B) small intestine. C) large intestine. D) rectum.
Which of the following glands has a neurosecretory component as well as a component that is not
under direct neural control?
a. the hypothalamus b. the pineal gland c. the adrenal gland d. the pituitary gland e. the parathyroid gland
A noncompetitive inhibitor decreases the rate of an enzyme reaction by _____
A) binding at the active site of the enzyme B) changing the shape of the enzyme's active site C) changing the free energy change of the reaction D) acting as a coenzyme for the reaction
Although all of the steps involved in expressing a gene can in principle be regulated, what is the most important stage of control for most genes?
a. RNA processing b. mRNA translation c. RNA transport and localization d. mRNA degradation e. transcription initiation