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MCAT Question A Day - 8/11/13

Substance A is produced during a reaction catalyzed by Enzyme B. As the concentration of Substance A increases, it binds to Enzyme B, causing it to change its shape and become inactive. This is an example of

I.  feedback inhibition only.
II.  allosteric inhibition only.
III.  competitive inhibition only.

A.  I and II
B.  I and III
C.  I, II, and III

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