🦷 What Is Digestion?
Digestion is the process by which our body breaks down large, insoluble food molecules into small, soluble molecules that can be absorbed into the bloodstream.
It involves two stages:
| Type of Digestion | Description | Example |
|---|---|---|
| Mechanical digestion | Physically breaking food into smaller pieces | Chewing (teeth), churning (stomach) |
| Chemical digestion | Breaking down food using enzymes and chemicals | Amylase in saliva breaking starch into sugars |
🧩 Why it’s important: Without digestion, nutrients like glucose, amino acids, and fatty acids can’t enter our cells for energy or growth.
Course Content
KS3: Digestion: Introduction
You don't currently have access to this content
KS3 Digestion: Absorption and the Journey of Food Molecules
You don't currently have access to this content
The Small Intestine and Helpful Bacteria
You don't currently have access to this content