Which of the following is a feature of the electron transport chain?
a. It captures energy in the high-energy bonds of ATP.
b. It pumps carbon dioxide across the mitochondrial membrane.
c. It is composed of a series of coenzymes that transfer electrons up a concentration gradient.
d. It combines oxygen from carbon dioxide with hydrogen generated from the splitting of water.
e. It facilitates the transport of sodium and calcium.
ANS: A
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The body's set point has been suggested to be
A. the weight that is reached and maintained during mid-life. B. one's minimum body weight. C. a weight the body attempts to maintain closely. D. one's desirable and most healthy body weight.
One of the physiological adaptations the body makes to chronic heat stress is earlier onset of
sweating. Indicate whether the statement is true or false
Which element is regulated by the buffer systems?
A) oxygen B) hydrogen C) carbon dioxide D) chloride
The recommended range of body fat for a woman is:
a. 13 to 21%. b. 15 to 23%. c. 23 to 31%. d. 27 to 35%.