The organelles involved with organization of the spindle fibers are the ________.
A. centrioles
B. nuclei
C. mitochondria
D. ribosomes
E. lysosomes
Answer: A
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Thyroxine
A) enhances the rate at which proteins are synthesized. B) reduces the rate at which carbohydrates are utilized. C) inhibits responses of the nervous system. D) inhibits the rate at which calcium enters body fluids.
Which of the following components of bone provides it with flexibility?
A. water B. calcium carbonate C. calcium phosphate D. collagen
Where does blood leaving the glomerulus go next?
A) efferent arteriole B) Bowman's capsule C) vasa recta D) afferent arteriole E) peritubular capillary
The ability to develop increasing levels of force in an intact muscle composed of both fast and slow twitch muscle fibers typically involves:
A. recruitment of slow twitch muscle fibers before fast twitch muscle fibers B. tetany of fast twitch muscle at lower stimulus frequencies than slow twitch muscle C. a progressive recruitment of more muscle fibers within a given motor unit D. a progressive increase in the amplitude of the intracellular Ca++ transient E. a progressive decrease in the threshold for an action potential in the skeletal muscle