Topic 2.5 Enzymes

2. _______________ _____________temperature The temperature at which an enzyme has the maximum activity in an enzyme assay (8, 7)
6. ________________ pH the pH at which an enzyme exhibits maximum activity (7)
7. Enzyme breaks down lactose into glucose and galactose (also called lactase) (4-13)
10. The reactant on which an enzyme works (9)
12. Synthesis of larger molecules from smaller ones - usually by condensation (8)
13. Reactions in which complex molecules are broken down to simpler ones and energy is released (9)
14. _________________ model: Enzyme model where the substrate causes the enzyme to alter its shape slightly so it fits better
15. _____________ limited: The plateau part of a substrate concentration vs. reaction rate curve (6)
16. The part of an enzyme or antibody where the chemical reaction occurs (6, 4)

1. A substance produced in a chemical reaction (7)
3. the maximum rate of reaction determined just after the reaction begins (7, 4)
4. _____________ energy; The minimum amount of energy required to start a chemical reaction (10)
5. ________________ enzymes Enzyme molecules bound to an inert material, over which the substrate molecules move (11)
8. _______________ limited: The linear part of a substrate concentration vs. reaction rate curve (9)
9. ___________________ model: The model of the enzyme that shows the substrate fitting perfectly into the active site (4, 3, 3)
11. A substance that speeds up the rate of a chemical reaction (8)