Carbohydrate
Each reaction in a metabolic pathway is

reversible
catalyzed by a specific enzyme
controlled by the end product
irreversible

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Carbohydrate
Glucagon and epinephrine

inhibits gluconeogenesis and stimulates glycolysis
stimulates gluconeogenesis and inhibits glycolysis
stimulates gluconeogenesis and glycolysis
inhibits gluconeogenesis and glycolysis

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Carbohydrate
The multistep pathways of metabolism are efficient because they

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

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