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

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

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

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

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