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An abundant and continual supply of atp is necessary for all living cells. active muscle cells require an extraordinary amount of atp to permit strenuous exercise for prolonged periods. toxins, reduced blood flow, and a compromised respiratory system can interfere with the transport of oxygen to active cells. a runner in a marathon faces multiple obstacles to continue to produce sufficient atp to remain competitive. when oxygen delivery becomes insufficient to support a runner's aerobic metabolism, cells switch to an emergency mode in which
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8) animals respond in various ways to stimuli detected through their senses. some of these responses are stimulated by the presence of danger. which of these animal responses is the best example of a response to an immediate threat? a) a rooster crows every morning at the first sign of light. b) as something approaches an octopus, it shoots a cloud of ink. c) from late fall until spring, bears hibernate to preserve energy. d) a dog is getting hot in the sunlight, so he moves to a shaded area.
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In what part of the body does the most muscle activity happen?
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An abundant and continual supply of atp is necessary for all living cells. active muscle cells requi...
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