www.biology.comChapter 5.5
Enzymes in Real Life
“Cat”alyze = action of an
enzyme
Enzymes are proteins that lower the amount
of activation energy
Activation Energy=energy needed to start a chemical
reactionBlue Line=NO ENZYME
Red Line= ENZYME
Active Site Folds in an enzyme where
the substrate fitsSubstrate
Molecule that uses an enzyme
An enzyme does one of two things:
1. Breaks the substrate apart (releasing energy)
2. Puts two substrates together (absorbing energy)
Cells contain thousands of different kinds of enzymes.
Not all cells contain the same enzymes.
Chemical Reactions
The breaking down or building up of
substancesExample of a chemical reaction
Reactant(s) Peroxidase Product(s)
H2O2 H20 + O2
(hydrogen peroxide) (Water, Oxygen gas)
Reactants react, products are produced
The arrow is like an equals signPeroxidase is the ENZYME
3 Things can affect how enzymes work.
1.TemperatureBiology.com 5.5 page 2
2. pH (acidic or basic)
3. Concentration (how many enzymes are working
ex. Cubed vs. Ground up Liver)
Denature Enzymes don’t “die”, they just become unusable
How Beano Works: Complex indigestible sugars found in many plant products such as beans, cabbage, broccoli, onions, soy products, and others can ferment in your digestive system releasing gas in the form of flatulence. The enzyme in Bean-zyme breaks these sugars down into less complex sugars that the human body can digest, thus reducing or eliminating the intestinal gas formed. The enzyme is made from a safe food grade mold.
Exploding Liver