Enzymes
In the enzyme-catalyzed reaction shown below, what will be the effect on substances A, B, C, and D of inactivating the enzyme labeled E2? A ---(E1)---> B ---(E2)---> C ---(E3)--->

A, B, and C will still be produced, but not D
A and B will still be produced, but not C or D
A, B, C, and D will all still be produced
A will still be produced, but not B, C, or D

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Enzymes
Before they can react, many molecules need to be destabilized. This state is typically achieved through

changing the three-dimensional shape of the molecule
changing the reaction from a biosynthetic to a catabolic pathway
the input of a small amount of activation energy
oxidizing the molecules by removing electrons

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Enzymes
How is the enzyme COX-1 important in human health?

It helps to transport carbon dioxide in the blood
It is critical for the biosynthesis of DNA
It is a chemical derivative of aspirin
It catalyzes the production of hormones that maintain the stomach lining

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