Carbohydrate
The multistep pathways of metabolism are efficient because they

use the same enzyme for all of the substrates in the pathway
spread the enzymes for a pathway into several different organelles
use the same substrate for all of the enzymes in the pathway
locate all of the enzymes for a pathway in the same place within the cell

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Carbohydrate
Which of the following does not occur during gluconeogenesis?

The conversion of PEP to fructose bisphosphate
The carboxylation of pyruvate to oxaloacetate
The conversion of pyruvate to phosphoenolpyruvate (PEP)
The decarboxylation of oxaloacetate to phosphoenolpyruvate

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