Enzymes in breakdown & synthesis

Why this happens:

Many molecules we eat are too big too pass through the walls of the digestive system so digestive enzymes break them into Smaller Simpler Molecules

• Easily passed through walls of digestive systems

• Easily absorbed into bloodstream

• Pass into cells to be used by body Plants store energy in the form of starch, when plants need the energy, enezymes break down the starch into smaller molecules (sugars)

• Easily respired to transfer energy to be used by cells

Enzymes called carbohydrases convert carbohydrates into simple sugars

Proteases convert proteins into amino acids

Lipases convert lipids into glycerol & fatty acids

Some enzymes join molecules together Some organisms need to synthesise them back from their smaller compounds Enzymes catalyse the reactions needed to do this

Carbohydrates	Proteins	Lipids
Joining their simple sugars	Joining their amino acids	Joining fatty acids & glycerol