Which plant compound is most likely responsible for the unusual absence of heart disease among the Kuna?
a. curcumin
b. strigolactone
c. resveratrol
d. caffeine
e. epicatechin
ANSWER: e
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When cytosolic levels of iron increase, intracellular ferritin levels will
A. decrease. B. not change. C. increase. D. fluctuate by increasing and decreasing in a random fashion. E. drop until iron levels increase further.
During cell fractionation, the ____ cannot be isolated since it is destroyed when intact cells are lysed
a. lysosomes b. mitochondria c. plasma membrane d. proteins e. nucleic acids
Each of the following is a correct relationship between action potential phase and channel status except
A) depolarization; Na+ channels open. B) repolarizing phase; Na+ channels closed. C) repolarizing phase; K+ channels open. D) hyperpolarizing phase; Na+ channels open. E) hyperpolarizing phase; K+ channels open.
Enterococcus faecalis bacteria can be distinguished from other Gram-positive cocci because enterococci
A) have a glycocalyx. B) produce catalase enzyme. C) produce hemolysins. D) can grow in the presence of bile salts. E) are highly sensitive to antibiotics.