Transcript Amylase - SEP LESSONS

Intro
Cracker intro:
•What happened to the cracker and why?
• Did the cracker taste the same as time
went on?
Enzyme
starch
Enzyme
Sugar
Enzyme function
How do enzymes work?
• Digestive enzymes break macromolecules into their
building blocks
• An enzyme is specific for its substrate
• An enzyme is reusable
iodine
wate
r
sugar
starch
water
Starch-iodine solution
amylase
amylase
iodine
What would happen
if you added more
iodine?
amylase
starch
What would happen
if you added more
starch?
Enzyme
Enzymes are proteins = amino acids chains
folded up in a specific way
• Proteins are sensitive to their environment
• Heat or acidity can change the shape of proteins
How acids effect enzymes
Acid (vinegar)
Acid (vinegar)
amylase
Starch-iodine solution
Starch-iodine solution
Amylase lesson
water
Starch-iodine solution
amylase
Starch-iodine solution
Amylase lesson
Lab activity:
Testing the amylase activity in your saliva
Amylase lesson
Why were some samples lighter blue than
others?
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Interpreting your results
What does the amount amylase in your saliva tell you?
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Can you change the amount of amylase in your saliva through
your diet?
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Do students with a high amount of amylase in the class have an
evolutionary advantage over other students with a lower
amount?