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Enzyme

Posted: Sun Mar 11, 2018 10:59 pm
by CameronJohari1J
Do enzymes always speed up the reaction by lowering the activation energy or can they also act as inhibitors and slow down the reaction?

Re: Enzyme

Posted: Sun Mar 11, 2018 11:03 pm
by Remi Lathrop 1G
In every case I can think of, enzymes act as catalysts by lowering the activation energy of the reaction and speeding up the reaction. Cells use a lot of energy, so it is in their best interest to evolve enzymes that will speed up their chemical processes as opposed to slowing them down. Enzymes and active sites can become denatured so that they will no longer bind and be able to act as a catalyst, but in general there are not enzymes that slow down reactions.

Re: Enzyme

Posted: Sun Mar 11, 2018 11:08 pm
by AtreyiMitra2L
Enzymes, by defintion, are catalysts. Therefore, they work by speeding up the reaction and not by slowing down.

Re: Enzyme

Posted: Sun Mar 11, 2018 11:22 pm
by Renee Delamater 2H
Enzymes are catalysts and their job is to lower the activation energy - the energy needed for the reaction to get between the products and reactants point.

Re: Enzyme

Posted: Sat Mar 17, 2018 1:37 pm
by Clarissa Molina 1D
What is the difference between a homogeneous catalyst and a heterogeneous catalyst?

Re: Enzyme

Posted: Sat Mar 17, 2018 4:27 pm
by Jenny Cheng 2K
A homogeneous catalyst is a catalyst in the same phase as the reactant. A heterogeneous catalyst is a catalyst that is in a different phase than the reactant.