Athletes who train at high altitudes increase their red blood cell count, which increases their oxygen supply during exercise. Increased oxygen supply results in ________.
A. increased use of myokinase
B. longer anaerobic fermentation
C. longer aerobic respiration
D. reduced ATP consumption
E. increased glycolysis
Answer: C
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Which mineral is the most abundant mineral in the body?
a) Calcium b) Sodium c) Magnesium d) Phosphorus e) Iron
The "true wrist" or carpus consists of ________.
A) a group of eight short bones united by ligaments B) the phalanges C) the styloid processes of the radius and ulna D) the metacarpals
If the ________ node is damaged, the result might be total heart block.
Fill in the blank(s) with the appropriate word(s).
All of the following are typical characteristics of neurotransmitters except ________
A) they are released into the bloodstream before reaching the postsynaptic cell B) they are released in response to stimulation C) they alter the physiology of the postsynaptic cell D) they bind to specific receptors on the postsynaptic cell E) they are synthesized by a presynaptic neuron