1. ENZYMES

2. ENZYMES Made of proteins Enzymes are organic catalysts
Contain: ____ _____ _____ _____
Enzymes are organic catalysts
Catalysts are chemicals that help chemical reactions occur
Enzymes remain the same during a chemical reaction
Always end in –ase
Ex. Lipase, Protease, Glucase, Lactase

3. ENZYMES
Lock-and-Key Model

4. ENZYMES In the Lock and Key Model, enzymes must fit their substrate
Enzymes are “specific”

5. ENZYMES Each enzyme can work on only one specific substrate Ex.
Lipase works only on __________
Sucrase works only on ____________
Protease works only on ____________
__________ works only on fructose

6. ENZYMES
Enzymes help perform dehydration synthesis

7. ENZYMES
Enzymes help perform hydrolysis

8. ENZYMES
Re-draw and label each part of the picture

9. ENZYMES Enzymes are effected by the following factors: Temperature pH
Concentration of enzyme
Concentration of substrate

10. ENZYMES Temperature Enzymes work best at an optimum temperature
Optimum temperature for human enzymes is ______, C or _________, F
Enzyme activity is slower as temperature gets too cold or too hot

11. ENZYMES
Temperature

12. ENZYMES
Temperature
At high temperatures, enzymes will lose their shape
They denature
Misshapen enzymes no longer fit in the Lock and Key Model, so chemical reactions do not take place

13. ENZYMES pH
Enzymes rate of reaction is effected by the amount of acid or base in an environment

14. ENZYMES pH

15. ENZYMES
Optimum pH for two different enzymes

16. ENZYMES Concentration
Increasing the concentration (amount) of an enzyme or substrate, will only increase the rate of reaction, to a point

17. ENZYMES
Co-enzymes
Enzymes work with co-enzymes to speed up the rate of reactions.
Ex. vitamins