Enzymes, Lecture example.

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Maria Trujillo 1L
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Joined: Fri Apr 06, 2018 11:05 am

Enzymes, Lecture example.

Postby Maria Trujillo 1L » Sun Mar 10, 2019 11:55 pm

In lecture, it was brought up that enzymes are a zero order reaction. I was wondering why that is true because to be it would make more sense for them to be a first-order reaction since the amount you have would matter? So wouldn't it be dependent on concentration?

Kathryn 1F
Posts: 66
Joined: Fri Sep 28, 2018 12:19 am

Re: Enzymes, Lecture example.

Postby Kathryn 1F » Mon Mar 11, 2019 11:17 am

I think he was referring to an enzyme catalysed reaction, not the enzyme itself. We assume that the reactants are saturated with respect to the enzyme, so the enzymes are already working at full potential. Adding more reactant is not going to make the enzyme work faster

Arta Kasaeian 2C
Posts: 30
Joined: Mon Jan 07, 2019 8:22 am

Re: Enzymes, Lecture example.

Postby Arta Kasaeian 2C » Mon Mar 11, 2019 11:38 am

Since in an enzyme catalyzed reaction the rate of reaction of the enzyme doesn’t change based on the amount of reactant, and the enzyme itself is not affected, it wouldn’t be taken into account in the rate law, so it would be zero order

Jennifer Torres 2L
Posts: 62
Joined: Tue Nov 14, 2017 3:01 am

Re: Enzymes, Lecture example.

Postby Jennifer Torres 2L » Mon Mar 11, 2019 8:46 pm

I believe he meant an enzyme catalyzed reaction. The rate is unaffected by the amount of the reactant present so the enzyme will remain unaffected. No impact on rate law so zero order.

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