Carbohydrate
A common way that cells capture the energy released during the breakdown of large molecules is to add electrons to smaller, specialized molecules that can accept them. This process of electron acceptance is otherwise known as

reduction
metabolism
biosynthesis
catalysis

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Carbohydrate
The multistep pathways of metabolism are efficient because they

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

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