The term ________ refers to a membrane that allows some things to pass through it but not others.
A. carrier-mediated
B. phospholipid bilayer
C. glycocalyx
D. specificity
E. selectively permeable
Answer: E
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The vital centers for the control of heartbeat, respiration, and blood vessel diameter are located in the:
a. pons b. medulla c. cerebrum d. cerebellum
Which of the following processes require the use of protein carrier molecules?
A) facilitated diffusion and solute pumping B) facilitated diffusion and vesicular transport C) vesicular transport and osmosis D) osmosis and filtration E) filtration and exocytosis
Atherosclerosis involves a
A. sustained increase in blood flow that leads to decreases in venous resistance to keep blood pressure constant. B. sustained increase in resistance that leads to increases in arterial pressure to maintain adequate blood flow. C. sustained decrease in resistance that leads to decreases in arterial pressure to maintain adequate blood flow. D. sustained increase in blood pressure that leads to compensatory vasodilation. E. sustained decrease in blood flow that leads to increases in arterial diameter to lower resistance and raise pressure.
The meningeal layer in contact with the cranium is the
A. dura mater. B. arachnoid. C. pia mater. D. None of the above