Enzymes

3. A factor that affects enzyme activity by increasing molecular movement
4. The best condition (temperature or pH) at which an enzyme works most efficiently
5. The specific region on an enzyme where the substrate binds
8. The sum of all chemical reactions occurring in a living organism
13. The loss of enzyme shape and function due to extreme temperature or pH
14. The speed at which a chemical reaction occurs
17. A biological catalyst that speeds up chemical reactions in living cells
18. The minimum energy required to start a chemical reaction
20. A substance that slows down or prevents enzyme activity
21. The model describing enzyme-substrate binding as a perfect fit
22. The ability of an enzyme to act only on a particular substrate

1. The substance formed as a result of an enzyme-controlled reaction
2. A type of inhibitor that competes with the substrate for the active site
6. A substance that increases the rate of a chemical reaction without being used up
7. A type of inhibitor that binds to a different part of the enzyme
9. The substance that an enzyme acts upon
10. A chemical process in which substances are converted into products
11. The model where the enzyme changes shape slightly to fit the substrate
12. A non-protein helper molecule required for some enzymes to function
15. The type of macromolecule that enzymes are made of
16. Increasing substrate ______ generally increases reaction rate until saturation
19. The building blocks of proteins and enzymes
23. A measure of acidity or alkalinity that affects enzyme shape and function