Which of the following is not a way that red blood cell shape is significant?
A) It gives the red blood cell a large surface area to volume ratio.
B) It allows fast exchange of gases between the inside of the cell and the plasma.
C) It enables red blood cells to form stacks.
D) It allows red blood cells to bend and flex.
E) It enables red blood cells to phagocytose bacteria.
E
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____________________ is a second messenger formed when a membrane enzyme called a cyclase becomes activated by a G protein
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By signaling the small intestine, the ____ is an endocrine gland, and ____ is a hormone
a. large intestine, vitamin D. b. large intestine, vitamin E. c. skin, vitamin D. d. skin, vitamin E. e. thyroid gland, TSH.
In an EPSP (excitatory postsynaptic potential), there is a
A. local depolarization. B. local hyperpolarization. C. net movement of Cl? into the cells. D. net movement of Na+ out of the cells. E. decrease in action potential amplitude.