Enzymes
The role of Asp 102 and His 57 during trypsin catalysis is to

function as a proton shuttle
keep the specificity pocket open
clamp the substrate into the active site
neutralize the charge on the other's side chain

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

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

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Enzymes
Enzyme-driven metabolic pathways can be made more efficient by

concentrating enzymes within specific cellular compartments
All of these
grouping enzymes into free-floating, multienzyme complexes
fixing enzymes into membranes so that they are adjacent to each other

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