Molecular motors:
a. are transporter proteins
b. attach to the particle to be transported
c. do not use energy from ATP to function properly
d. a and b
e. all of the above
D
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During the citric acid cycle, both NAD and FAD ________ a hydrogen atom and become ________
A) lose; oxidized B) gain; oxidized C) lose; reduced D) gain; reduced E) gain; ATP
In the following illustration, the arrow points to the:
A) left vagus nerve. B) left sympathetic trunk. C) left phrenic nerve. D) left internal thoracic artery. E) hemiazygos vein.
Air moves into the lungs during inspiration due to the force of __________.
A. the diaphragm B. the abdominal muscles C. atmospheric pressure D. the external intercostal muscles
The presence of water in our bodies allows us to
A. cool the body with sweat. B. maintain a fairly constant body temperature. C. provide an environment for chemical reactions. D. keep tissues moist and reduce friction. E. All of these choices are correct.