Aamc cbt 11 #125

[acharlie17]

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To my understanding, a competitive inhibitor decreases the amount of available enzyme. Alcohol in this case would decrease the amount of cP-450? and since alcohol is a competitive inhibitor, shouldn't adding more substrate ultimately overcome the inhibition? Please help 🙁


I chose C- decrease the concentration of cP-450
Since I thought adding a competitive inhibitor would decrease the available amount of enzyme.​

 

[TinaBina22]

This was a tricky one, and I was wrestling between those two choices too. However, the reason I chose "Inhibitor" only is because that fact is verbatim stated in the passage.

 

[MedPR]

Competitive inhibitors don't change enzyme concentration. They just bind the enzyme and block the substrate from binding. Adding more substrate can overcome competitive inhibitors only because competitive inhibitors do not change enzyme or affect the enzyme concentration in any way.