When blood leaves the heart, it first enters
A) capillaries.
B) arterioles.
C) venules.
D) veins.
E) arteries.
E
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The process of binary fission leads to the production of how many cells?
a. 1 b. 2 c. 3 d.4
Each of the following citric acid cycle enzymes catalyzes electron transfer to NADH/FADH2 except
A) isocitrate dehydrogenase. B) ?-ketoglutarate dehydrogenase. C) succinyl CoA synthetase. D) succinate dehydrogenase. E) malate dehydrogenase.
Lenticels function to:
a. protect undeveloped embryonic shoots. b. allow the diffusion of oxygen into woody stems. c. support leaves and flowers. d. absorb water and dissolved nutrient minerals. e. anchor a plant in the ground.
A cell encounters a change in its environment (electrical or heat) that could be fatal. However, it is able to respond in a protective manner because this information is sent indirectly through the cell membrane to the nucleus where it stimulates the appropriate response. This is more likely a process known as
A. active transport. B. chemomodulation. C. phagocytosis. D. signal transduction.