1. ENZYMES

2. Chemical reactions need help to get started.
Ex: A fire needs a match to get it started.

3. ______________ to get a chemical reaction _______________
= ________________________
ACTIVATION ENERGY
REACTANTS
PRODUCTS
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4. ___________ HELP CHEMICAL REACTIONS _______________
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___________ HELP CHEMICAL REACTIONS _______________
Catalysts work by ____________ the
___________________________to get a chemical reaction started.

5. IT’S LIKE PUSHING A SNOWBALL UP A HILL
Once it gets to top . . .
it can roll back all by itself

6. CATALYSTS in Living Things
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CATALYSTS in Living Things
In living systems __________ that
________________to control chemical reactions are called
= _________
SEE ANIMATION of AMYLASE
More about this in Chapters 7,8,9 and 12

7. PROTEINS CAN BE ENZYMES
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Arrow:

8. to only _________of _________.
ENZYMES _____ like
a _______________
to only _________of _________.
Enzymes are ___________ by the reaction and ___________

9. FACTORS THAT AFFECT ENZYME ACTIVITY
__________ & ______________
Conditions that are TOO ACIDIC
or TOO HOT cause proteins to
________ or _________
See a movie
Choose narrated

10. Denaturing _______ the _______ of the ______________ so enzyme ______________ to ____________
_______________ (keeping pH and temperature constant) is ______________ for maintaining ____________________
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11. Many enzyme NAMES end in _____
and the beginning of the name tells what it does
DNA Polymerase= “polymerizes”
joins monomers to make DNA
Protease=
breaks down proteins
ATP synthase= synthesizes ATP

12. How is the SHAPE of an enzyme related to its FUNCTION?
MAKE CONNECTIONS
How is the SHAPE of an enzyme related to its FUNCTION?