Metabolism encompasses all the chemical reactions that occur within the body to sustain life. These reactions include:
* Anabolism: Building up complex molecules from simpler ones, such as building proteins from amino acids.
* Catabolism: Breaking down complex molecules into simpler ones, such as breaking down glucose for energy.
Here are some examples of metabolic processes:
* Digestion: Breaking down food into smaller molecules that the body can absorb.
* Respiration: Using oxygen to extract energy from food.
* Excretion: Removing waste products from the body.
* Growth: Increasing in size and complexity.
* Repair: Healing damaged tissues.
* Reproduction: Creating new life.
Therefore, metabolism encompasses all the essential functions that keep the body alive and functioning.