EPSPs are caused by the movement of
a. Na+ out of the cell.
b. Na+ into the cell.
c. K+ into the cell.
d. both Na+ and K+ into the cell.
b. Na+ into the cell.
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Which statement is incorrect?
a. Rising to moderate levels of estrogen inhibit the hypothalamus and anterior pituitary in negative-feedback fashion. b. Under the influence of estrogen from developing follicles, both FSH and LH secretion both continue to decline throughout the follicular phase. c. Both estrogen and progesterone are required to completely inhibit tonic LH secretion. d. A high level of estrogen stimulates LH secretion and initiates the LH surge. e. Progesterone powerfully inhibits both FSH and LH secretion.
Osmosis is the movement of water
a. using a carrier-mediated transport mechanism. b. down a solute's concentration gradient. c. down its own concentration gradient. d. across a membrane irrespective of concentration gradients. e. across a membrane down its own concentration gradient.
If a female who is a carrier for a genetic disorder has a child with a male who is also a carrier for the same disorder, the probability that their offspring will have the disorder is ________.
A. 100% B. 50% C. 25% D. 0%
The area in the mouth contained by the teeth is known as ________
A) vestibule B) uvula C) labia D) oral cavity proper E) lingual frenulum