Chapter 8 b

1. The portion of a biological system's energy that can perform work when temperature and pressure are uniform throughout the system.
4. A nonspontaneous chemical reaction in which free energy is absorbed from the surroundings.
6. A method of metabolic control in which the end product of a metabolic pathway acts as an inhibitor of an enzyme within that pathway.
8. A spontaneous chemical reaction in which there is a net release of free energy.
10. The capacity to cause change, especially to do work (to move matter against an opposing force).

2. A temporary complex formed when an enzyme binds to its substrate molecule(s).
3. A substance that reduces the activity of an enzyme by entering the active site in place of the substrate, whose structure it mimics.
5. In cellular metabolism, the use of energy released from an exergonic reaction to drive an endergonic reaction.
7. Thermal energy in transfer from one body of matter to another.
9. A macromolecule serving as a catalyst, a chemical agent that increases the rate of a reaction without being consumed by the reaction.