Enzymes
Common feature in all serine proteases is a

hydrophilic specificity pocket
cluster of reactive serine residues
hydrophobic specificity pocket
single reactive serine residue

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

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
changing the three-dimensional shape of the molecule

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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 a chemical derivative of aspirin
It catalyzes the production of hormones that maintain the stomach lining
It is critical for the biosynthesis of DNA

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