Question

What is anabolism and catabolism.

Answer 1

Catabolic reactions usually release energy that is used to drive chemical reactions. 

Anabolism refers to chemical reactions in which simpler substances are combined to form more complex molecules.
Anabolic reactions usually require energy.
Anabolic reactions build new molecules and/or store energy.

Answer 2

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Anabolism :-

The synthesis of complex molecules in living organisms from simpler ones together with the storage of energy; constructive metabolism.

Catabolism :-

The breakdown of complex molecules in living organisms to form simpler ones, together with the release of energy; destructive metabolism.