Capping proteins such as CapZ
A) cause microtubules to lengthen.
B) destabilize microtubules.
C) stabilize microtubules.
D) cause microtubules branching.
E) connect microtubules to microfilaments.
C) stabilize microtubules.
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All of the following characterize a hibernating homeotherm, except
A) low blood pH. B) high CO2 level in blood. C) increased heart rate. D) decrease in body temperature.
All human cells carry
a. one X and one Y chromosome b. at least one X chromosome c. at least one Y chromosome d. a pair of X chromosomes
The fossil record shows that for many plant and animal groups, the time between speciation events
A) is usually about 50,000 years. B) varies greatly, but averages 6.5 million years. C) is usually greater than 40 million years. D) is equivalent to the length of 100 generations of a species.
Signs and symptoms of significant cyanide exposure include:
A) tachypnea. B) bradycardia. C) hypertension. D) hot, dry skin.