What is metabolism?

Answer: Metabolism is the sum total of all chemical reactions occurring within the cells of a living organism. It includes two main processes:

1. Catabolism: Breaking down complex molecules into simpler ones, releasing energy
2. Anabolism: Building complex molecules from simpler ones, consuming energy

Metabolism is considered a defining feature of life, as no non-living object exhibits metabolic activities. These reactions are essential for growth, reproduction, maintaining cellular structures, and responding to environmental stimuli.