Microbial Metabolism - Catalysis and enzymes

6 important questions on Microbial Metabolism - Catalysis and enzymes

What is needed to reduce the activation energy barrier, allowing the reaction to proceed?

Catalyst

What are the major catalysts in cells?

Enzymes

What is the name of the group consisting of small nonprotein molecules that bind tightly to their enzymes, usually covalently and permanently?

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What is the name of the group consisting of small nonprotein molecules that bind loosely and often transiently bound to enzymes; thus, it can associate with a number of different enzymes?

Coenzymes

How is the required activation energy reduced by an enzyme-substrate complex?

By placing strain on specific bonds

Are enzymes reversible in their activity?

Yes, but enzymes that catlayze highly exergonic or highly endergonic reactions typically function in only one direction.

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