1. Regulate cell chemisty
Enzymes
Regulate cell chemisty

2. Enzymes
Enzymes- are biological catalysts, or chemicals that accelerate a chemical reaction without itself being affected by the reaction.

3. Enzymes
Groups of enzymes work together to carry out a given metabolic function.
This process must be regulated in order to allow the cell to meet its changing needs for energy.

4. Enzymes Enzymes - are vital to such bodily functions as digestion
Large Insoluble Molecule
Type of Enzyme
Small Soluble Product
Carbohydrate (e.g. Starch)
Carbohydrase
Simple Sugars (e.g. glucose)
Protein
Protease (e.g. pepsin)
Amino Acids
Fat/Lipids
Lipase
Glycerol and Fatty Acids

5. Enzymes 1.Enzyme – usually end in ase
Amylase -enzyme that catalyses the breakdown of starch into sugars (saliva)
Lactase – enzyme that breaks down sugar to produce energy

6. Enzymes often associate with other molecules to get the job done

7. Enzymes Cofactor Aid in the action of the enzyme Non-protein
link to enzymes / presence is essential to the activity of those enzymes

8. Enzymes
Cofactors work by changing the shape of an enzyme
Specificity
                         

9. Enzymes
3. Substrate
In an enzymatic reaction, the reactant that the enzyme acts upon is:
Substrate
Lactase Lactose Galactose
Glucose

10. Enzymes
A number of variables effect enzyme activity:
Temperature pH

11. Enzymes Heat-sensitive enzyme Controls Melanin
More enzyme activity in cooler areas(darker)
The enzyme the determines melanin optimal temp is below 103
Less enzyme activity in warmer areas (lighter)