Catabolic pathways break down complex molecules into simpler ones, releasing energy in the process. This energy is primarily stored in the form of ATP, which can be used by the cell to perform work. Therefore, catabolic pathways supply energy for the cell's work.

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Catabolic Pathways

Question 18

Multiple Choice

Catabolic pathways

A) combine molecules into more energy- rich molecules.
B) supply energy, primarily in the form of ATP, for the cell's work.
C) build up complex molecules such as protein from simpler compounds.
D) are spontaneous and do not need enzyme catalysis.
E) are endergonic.

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