Enzymes

6. The minimum energy required for a chemical reaction to occur.
7. The process of breaking down large molecules into small molecules with a net release of energy.
9. A reaction that absorbs free energy from the surrounding ; have products with more stored energy than the reactants.
10. Substances that are the result of a reaction.
12. Substrates in a catalysed reaction.

1. The active site is flexible, it changes shape to the substrate as they bond together.
2. Organic cofactors, such as vitamins and NAD+
3. The sum of chemical reactions occurring in that cell.
4. A reaction that has a net release of free energy ; have reactants with more stored energy than the products of the reaction.
5. The active site has a set shape, substrate molecules fit perfectly into active site, like a key in a lock.
8. A substance that reduces or stop the enzyme from functioning.
11. The process of making large molecules from small molecules with a net input of energy.