A red blood cell is in an artery in the right leg. How many capillary beds will it pass through before it returns to the left atrium of the heart?
A) none
B) one
C) two
D) three
Answer: C
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Halobacterium salinarum and certain other extreme halophiles carry out light-driven synthesis of ATP under what condition?
A) low oxygen concentrations B) low light C) high oxygen concentrations D) high carbon dioxide concentrations
One species of plant produces flowers when nights are 10 hours long. A related species comes into flower when nights are 9 hours long. What type of reproductive isolation would include this example?
A) gamete incompatibility B) temporal isolation C) mechanical isolation D) behavioral isolation
The "conducting zone" of a neuron is found at the ____.?
a. axon
b. dendrite terminal
c. cell body
d. axon hillock
e. synapse
Incubation of cells at 20°C blocks the release of proteins from the trans-Golgi. Under such conditions, you would expect to see
A. a decrease in exocytosis. B. an increase in exocytosis. C. a decrease in endocytosis. D. an increase in endocytosis.