Biology: Chapter 26
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10 Terms
Catalyst
A substance that speeds up a chemical reaction without being used up.
Enzyme
A biological catalyst that speeds up reactions in living cells.
Enzyme Chemical Nature
Enzymes are proteins.
Substrate
The substance an enzyme acts on.
Product
The substance formed after a chemical reaction.
Specific
An enzyme only works with one particular substrate.
Active Site
The part of the enzyme where the substrate binds and reacts.
Metabolism
All the chemical reactions that happen in a living organism.
Catabolic reaction + example
A reaction that breaks substances down to release energy, for example digestion of glucose.
Anabolic reaction + example
A reaction that builds larger molecules using energy, for example photosynthesis.
Note 
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