Most epidermal cells are ___
a. melanocytes
b. keratinocytes
c. collagenocytes
d. neuroglia
e. striated
ANSWER: b
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If a cell has a greater concentration of solute than its environment, the cell
A. is isotonic to the environment. B. will not experience a net gain or loss of water. C. will die. D. is hypertonic to the environment. E. is hypotonic to the environment.
In sickle cell anemia, glutamic acid is
substituted for
a. valine b. lysine c. serine d. arginine e. phenylalanine
Describe how cells can regulate aerobic respiration at the level of the conversion of glucose-6-
phosphate to fructose-1, 6-bisphosphate as catalyzed by phosphofructokinase (PFK). What will be an ideal response?
What is the function of inhibin?
a. to inhibit sperm production b. to concentrate testosterone in the testes c. to inhibit FSH secretion d. to stimulate FSH secretion e. to stimulate the interstitial cells to produce testosterone