Which term describes the total set of chemical reactions in a cell, including both building up and breaking down?

Which term describes the total set of chemical reactions in a cell, including both building up and breaking down?

• A. Catabolism
• B. Anabolism
• C. Exergonic Reactions
• D. Metabolism

Answer: (D)

Metabolism describes the total set of chemical reactions in a cell, including both building up and breaking down. It covers the entire network of pathways that convert energy and matter to sustain life, with catabolic processes breaking down molecules to release energy and anabolic processes using that energy to synthesize larger, more complex molecules. This interconnected system is driven by energy carriers like ATP and is tightly regulated so flux through pathways matches the cell’s needs. The other terms refer to parts of metabolism or to a feature of individual reactions: catabolism is the breakdown side, anabolism is the synthesis side, and exergonic reactions describe energy release of a single reaction, not the whole set of cellular processes.

Metabolism describes the total set of chemical reactions in a cell, including both building up and breaking down. It covers the entire network of pathways that convert energy and matter to sustain life, with catabolic processes breaking down molecules to release energy and anabolic processes using that energy to synthesize larger, more complex molecules. This interconnected system is driven by energy carriers like ATP and is tightly regulated so flux through pathways matches the cell’s needs. The other terms refer to parts of metabolism or to a feature of individual reactions: catabolism is the breakdown side, anabolism is the synthesis side, and exergonic reactions describe energy release of a single reaction, not the whole set of cellular processes.