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What is primarily accumulated in a muscle that has contracted many times causing fatigue?
A. Blood.
B. Oxygen.
C. Lactic acid.
D. Carbon dioxide.
During heavy exercise, glycogen in the muscle breaks down to lactic acid faster than lactic acid can be oxidized, resulting in lactic acid accumulation.
 
 
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While these questions do not fit the MCAT format (they have no related reading passages) they cover concepts one should understand in order to do well in the biological sciences portion of the MCAT.
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Added: 7/2/2008
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A place of study for those about to take the MCAT exam. If anyone would like to add content to this study group say so in the comments.
 
 
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Dolor
Dolor says:
Why isnt all information shared like this? Great site. Great test.
Posted: 10/27/2010