Enzymes
The proteolysis rate enhancement by chymotrypsin (~1010 folds) corresponds to a reduction in activation energy of about

40 kJ/mol
58 kJ/mol
49 kJ/mol
88 kJ/mol

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

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

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Enzymes
Which of the following is false statement with regard to comparison between Serine and HIV proteases?

Both require water to complete the catalytic cycle
Both use nucleophilic attack to hydrolyze the peptide bond
Both forms an acyl-enzyme intermediate
Both show specificity for certain amino acid sequences

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

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

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