Which of the following is a key role of glycolipids and glycoproteins in the plasma membrane?
A. Transportation of molecules through the membrane
B. Stabilization of the phospholipid bilayer
C. Cell movement
D. Cell identification
Answer: D
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Extrinsic control of arteriolar radius is
a. accomplished primarily by the sympathetic nervous system b. important in the regulation of arterial blood pressure c. sometimes overridden by local adjustments d. all of the above e. only a and b
Which is not correct regarding the innervation of the kidney?
A. Sympathetic stimulation causes vasoconstriction of the renal blood vessels. B. Parasympathetic stimulation decreases the rate of filtrate formation. C. The kidney is served by the renal plexus. D. Sympathetic innervation is from segments T10-T12 of the spinal cord. E. Parasympathetic innervation is from the vagus nerve.
The neurotransmitter orexin plays a role in:
A) the regulation of metabolism. B) the promotion of sleepiness. C) body temperature regulation. D) the promotion of wakefulness.
There are four stages in the healing of a bone fracture. Which of the following best illustrates the sequence of these stages? 1. bony callus formation 3. fibrocartilage callus formation 2. bone remodeling 4. hematoma formation
A) 4, 3, 2, 1 B) 4, 3, 1, 2 C) 1, 2, 3, 4 D) 1, 3, 4, 2 E) 1, 3, 2, 4