Question

Define Catabolic Reaction

Answer 1

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$\sf{\large{\underline{\underline{Catabolic \: Reactions:}}}}$

Catabolic reactions are break down of large organic molecules into smaller molecules, releasing the energy contained in the chemical bonds. These energy releases (conversions) are not 100 percent efficient. 

Answer 2

Catabolic reactions are a type of metabolic reaction that take place within a cell. Larger molecules are separated to form smaller molecules, as in the case of respiration where glucose is broken down to form carbon dioxide and water. Often they are hydrolysis reactions in which water molecules are used to break bonds.