What is biological digestion?

Biological digestion is the process by which living organisms break down food into simpler substances that can be absorbed and used by the body. This process is carried out by enzymes, which are proteins that act as catalysts for specific chemical reactions.

There are two main types of biological digestion:

* Mechanical digestion: This is the physical breakdown of food into smaller pieces, which increases the surface area of the food and makes it easier for enzymes to work on it. This process is carried out by the teeth and the stomach muscles.

* Chemical digestion: This is the breakdown of food into simpler molecules by enzymes. This process takes place in the mouth, stomach, and small intestine.

The final products of biological digestion are amino acids, simple sugars, and fatty acids. These molecules are absorbed into the bloodstream and transported to cells throughout the body, where they are used for energy production, building new tissues, and other metabolic processes.

Biological digestion is an essential process for all living organisms. Without it, we would not be able to extract nutrients from food and use them to fuel our bodies.