1. Think… FAST! Like Lightning!!
Enzymes:
Think… FAST!
Like Lightning!!

2. Question/“Food for thought”: Why do we need enzymes?
Enzymes are key to our metabolism:
They are needed for every chemical reaction
that takes place in the human body.
Every Synthesis (anabolic) Reaction uses enzymes
Every Decomposition (catabolic) Reaction uses enzymes

3. Chemical Reactions Synthesis: gets bigger (polymer)
Decomposition: gets smaller (monomer)
Reactants---_Reaction Products
Enzymes shorten the arrows!
Speed up reaction
Make products faster! Speedy delivery!

4. Homeostasis
Enzymes are catalysts: they speed up reaction time so we can go home faster!
Home: where we want to go
Stasis: because it’s stable!
Homeostasis: stability of organism

6. How do they work?
Describe what you think is happening in this picture in relation to ENERGY

7. How do they work?

9. Enzyme Structure

11. 4 Main enzymes of the digestive system
Amylases in the mouth
Proteases in the stomach
Lipases in the small intestine
Polymerases in the small intestine

12. Amylase
These enzymes are found in saliva and work in the mouth to start digesting carbohydrates

13. Protease
Are enzymes found in the stomach that help in the digestion of proteins

14. Lipase:
Digest fat in the small intestine

15. Polymerase
Digest nucleic acids in the small intestine

17. Enzymes are Recycled

18. Digestive System

19. Denaturing
Sometimes high temperatures or extreme pH values can affect the shape of an enzyme.
This process can make an enzyme less effective, possibly even useless.

20. Enzyme activity: (go to www demo first)

22. “Lock and Key” Theory

26. Enzyme Specificity:

29. Enzyme plus Substrate= Enzyme /Substrate complex

33. Recycle Reduce Reuse

38. Denaturing:

44. “Check out process” 1. An enzyme is a: A. carbohydrate B. lipid
C. protein D. nucleic acid

45. 1. An enzyme is a:
A. carbohydrate B. lipid
C. protein D. nucleic acid

46. 2. An enzyme can work on any substrate.
A. True B. False

47. 2. An enzyme can work on any substrate.
A. True B. False
Enzymes work on specific substrates only

48. 3. An enzyme can be used more than once.
A. True B. False

49. 3. An enzyme can be used more than once.
A. True B. False
The enzyme itself does not change when involved in a chemical reaction so that it can be used over and over again.

50. 4. The process that results in an altered enzyme shape is:
A. Synthesis B. Denaturing
C. Decompostion D. Anabolic

51. 4. The process that results in an altered enzyme shape is:
A. Synthesis B. Denaturing
C. Decompostion D. Anabolic

52. Links