Carbohydrate
Each reaction in a metabolic pathway is

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

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Carbohydrate
The glycosidic bond

in maltose is not hydrolyzed in lactose intolerant humans
in sucrose is hydrolyzed by bees
both (b) and (c)
joins glucose and fructose to form sucrose

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Carbohydrate
The multistep pathways of metabolism are efficient because they

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

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