All of the following are lipids except ________.
A. wax
B. starch
C. cholesterol
D. phospholipid
E. triglyceride
Answer: B
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The major function of the body of the vertebra is
A) transferring weight along the axis of the vertebral column. B) allowing twisting motions. C) protection of the spinal cord. D) providing support. E) providing a passageway for nerves.
K+ channels in the heart do not have binding sites for ACh, yet parasympathetic release of ACh causes outward flux of K+ from heart cells. How does this occur?
A. ACh triggers release of epinephrine from the adrenal glands, which in turn causes K+ flux out of heart cells. B. ACh binds to a G-protein coupled receptor on heart cells, and the G protein alpha subunit binds to a separate K+ channel and causes it to open. C. Parasympathetic neurons activate sympathetic neurons, which directly cause K+ flux from heart cells. D. ACh binds and activates a K+ pump on heart cells.
When the myelin sheath is destroyed, like in
MS patients, the resulting disruption in information flow can lead to all of the following EXCEPT
a. muscle weakness. b. severe hyperactivity. c. numbness. d. tremors. e. visual problems
What were the original two Kingdoms that were established to organize living organisms?