Discussion of all aspects of cellular structure, physiology and communication.
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Brett, temperature does affect enzyme activity because it increases the random molecular movement of the substrate (more of a chance for a substrate to get into the active site of the enzyme). pH on the other hand does not affect how fast a reaction occurs (it will if the pH becomes too low or too high because the enzyme will become denatured). Enzymes try to help keep pH levels right in the middle so the enzyme itself doesn't become denatured. So a pH level of 8.5 would only have very small effects on the enzyme.
No amount of experimentation can ever prove me right; a single experiment can prove me wrong.
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