1. Unit 2 Quiz
5 minutes of silent study time.

2. Unit 2- Biomolecules
2.3 Enzymes

3. Written Response #7 Complete the chart: Organic Molecule Subunits
Function
Carbohydrates
Lipids
Proteins
Nucleic Acids

4. DEHYDRATION SYNTHESIS
Chemical Reactions
reactant
product
build it up
break it down
DEHYDRATION SYNTHESIS
HYDROLYSIS
2 min.
2 min.

5. Enzymes Enzymes help increase the rate of reaction. enzyme substrate
Active Site- substrate & enzyme meet.
Substrate- reactants that are put together( synthesis) or broken down (decomp)
Enzyme-Substrate Complex- The joining of the enzyme and substrate together
Activation Energy- Energy needed to start rxn.
substrate
active
site
enzyme

6. Enzymes
1. Enzymes are ______
Proteins
They are made of amino acids!

7. Enzymes
Specific
2. Enzymes are _____________
Shape matters!

8. Enzyme Specificity
denature
temperature pH

9. Enzymes catalysts 3. Enzymes are _____________.
Enzymes SPEED UP chemical reactions by LOWERING the ACTIVATION ENERGY.
High Activation Energy= Slow Rxn
Low Activation Energy= Fast Rxn
*Graph with an enzyme will have a “smaller” bump for activation energy.

10. Where does enzyme activity appear to be highest?

11. What will happen to enzyme activity if I lower the pH by adding acid?

12. Enzymes reusable 4. Enzymes are _____________.
Enzymes shape doesn’t change after a reaction.
They can be used repeatedly forever as long as the shape doesn’t change.
reusable
Cycle of an enzyme used over and over
How can enzymes shape be changed and make them NOT REUSABLE? Temp & pH

13. 5. Enzymes help with _____________ & ___________.
digestion
5. Enzymes help with _____________ & ___________.
synthesis
Break down Proteins into…. _________________
Break down Carbohydrates into … _____________
Break down Nucleic Acids into … ______________
Break down Lipids into … ____________________
amino acids
sugars
nucleotides
fatty acids & glycerol

14. Enzyme Cut Out - Activity
Complete parts A-C in your notebook. Be sure to give each section a header such as:
Part A
Complete part D first and then cut it out and glue it into your notebook.
Once you have completed this assignment show it to me so that I may check for completeness.

15. Naming Enzymes These are all enzymes: Amylase Sucrase Lactase
Peroxidase
Fructase
What pattern do you notice?

16. Enzymes have the ending -ase
Naming Enzymes
These are all enzymes:
Amylase
Sucrase
Lactase
Peroxidase
Fructase
What pattern do you notice?
Enzymes have the ending -ase

17. Potato contains catalase – an enzyme!
That nearly all living things contain that are exposed to oxygen—its catalyzes Hydrogen Peroxide to Water & Oxygen
Bubbles =Enzyme Activity
Potato + Peroxide (H202)
WR: What type of reaction is this? (break down or build up) Use the correct term

18. Naming Sugars These are all sugars: Glucose Sucrose Lactose Galactose
Fructose
What pattern do you notice?

19. Naming Sugars Sugars have the ending -ose These are all sugars:
Glucose
Sucrose
Lactose
Galactose
Fructose
What pattern do you notice?
Sugars have the ending
-ose

20. Lactose Intolerance Written Response #8
Lactose intolerance is the inability to break down lactose (the sugar in milk) due to the lack of presence of lactase (the enzyme that breaks down lactose).
Write a paragraph and include pictures to describe what is happening internally for a person with lactose intolerance compared to someone who is not intolerant to lactose. * Remember the enzyme substrate complex*

21. Need for Speed Enzyme Activity

22. 2.3 Properties of Enzymes - Lab

23. Written Response #09
What do enzymes lower, allowing reaction to occur at body temperature?
Activation Energy
What organic compound are most enzymes?
Proteins
What is the name of the target chemical on which the enzyme works?
Substrate
Is the active site located on the enzyme or the substrate?
Enzyme
Name two characteristics of enzymes.
Specific, Reusable