Carbohydrate
The glycosidic bond

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

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Carbohydrate
The multistep pathways of metabolism are efficient because they

use the same substrate for all of the enzymes in the pathway
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
spread the enzymes for a pathway into several different organelles

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