Enzymes
The E.coli pyruvic acid dehydrogenase complex is reported to

Catalyze the reduction of pyruvic acid to acetyl Co A and CO2
decatalyze the oxidation of pyruvic acid to acetyl Co A and CO2
retard the reduction of pyruvic acid to acetyl Co A and CO2
Catalyze the oxidation of pyruvic acid to acetyl Co A and CO2

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

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

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