Biology: Digestion

Set of review cards on the topic of 'The Digestive System'

?
  • Created by: Kelly
  • Created on: 14-03-11 19:40

Introduction

Food swallowed --- passes along alimentary canal (tube running from mouth to anus)

The processes involved  are:

1. Ingestion; taking food in

2. Digestion; the break down of food into small, soluble molecules

3. Absorption; in to the bloodstream for distribution

4. Assimilation; the use of absorbed food materials in the cell

5. Egestion; removal of undigested food as faeces

1 of 2

The breakdown of food can be physical e.g. teeth, churning and mixing

or chemical e.g. enzymes:

CHO ------ (amylase) ----- glucose

fats -------- (lipase)---------fatty acids and glycerol

proteins -- (protease) ---- amino acids

2 of 2

Comments

No comments have yet been made

Similar Biology resources:

See all Biology resources »See all Enzymes and digestion resources »