enzyme

4. Anabolism is the process of making large molecules from smaller ones.
6. The metabolism of a cell is the sum of all the chemical reactions occurring in that cell.
9. The new substance formed as a result of a chemical reaction.
10. An endergonic reactions is one that absorbs free energy from the surroundings.
11. The induced fit model of enzyme activity describes a flexible active site that changes shape, or conforms, to the substrate as they bond together.
12. A exergonic reaction is one that has a net release of free energy.

1. Catabolism is the process of breaking down large molecules into smaller ones.
2. The starting substances that undergo change in a chemical reaction.
3. Organic cofactors are also called coenzymes.
5. The energy required to start any reaction is called the activation energy.
7. Molecules known as inhibitors can inhibit the activity of enzymes.
8. The lock-and-key model describes the active site as having a set shape.