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Post by Shania1298 » Tue May 26, 2020 5:12 pm

Hi! I have a quick question about #31 on the B/B section of AAMC FL1. I watched the review video posted by Dr. Anthony and tried searching other explanations online but am still a bit confused. Don't enzymes like proteases (trypsin, pepsin, etc) cleave the primary structure of peptides, altering them? I initially chose pH, but now see how that is a function of enzymes. However, I am still confused on how D is not a function of enzymes?. Thanks!
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Re: AAMC FL1 B/B Q31

Post by NS_Tutor_Mathias » Tue May 26, 2020 11:36 pm

They do not alter the rate of a reaction by altering the primary structure of the substrate, rather the reaction is that cleavage and subsequent change in primary structure (into two fragments). This is a pretty common type of answer choice: It correctly describes a function of an enzyme, but it does not correctly describe an answer to the question of how enzymes alter the rate of reaction.

Similarly, expect to see lots of answer choices that are true statements but do not answer the question posed.
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