1. Enzymes

2. Enzymes

3. What Are Enzymes? Many large proteins are enzymes
Act as Catalyst to accelerates (speed up) a reaction

4. Enzymes Are specific for what they will catalyze End in –ase -Sucrase
Only fit/work with one substance
End in –ase
-Sucrase
-Lactase
-Maltase
Are Reusable

5. How do enzymes Work?
Enzymes work by weakening bonds which lowers activation energy
The minimum amount of energy needed to start a reaction

6. Enzymes Without Enzyme With Enzyme Free Energy
Progress of the reaction
Reactants
Products
Free energy of activation

7. Enzymes are like Escalators (lower energy requirements)

8. Substrate The substance (reactant) an enzyme acts on is the substrate
Ex: sucrose is the substrate for sucrase
Enzyme
Joins
Substrate

9. Active Site
The Active site is a region of an enzyme where the substrate binds.
Active Site
Enzyme
Substrate

10. Induced Fit A change in the shape of an enzyme’s active site
It is induced (caused) by the substrate

11. Things that change enzyme effectiveness
Temperature
high temps may denature the enzyme.
Changes its shape and makes it nonfunctional pH
most like pH between pH (near neutral)
Substrate and enzyme concentration
High concentrations increase function
Low concentrations decrease function

12. A video review to help you understand..
Enzymes