__ 2. What Is the First Law of Thermodynamics?

__ 1. Define metabolism.

__ 2. What is the first law of thermodynamics?

__ 3. What type of macromolecules are enzymes?

__ 4. Define the terms phototroph and chemotroph.

__ 5. True or False – Enzymes are not used up in the reactions they catalyze and can be used over and over again.

__ 6. Define the terms autotroph and heterotroph.

__ 7. Define the terms oxidation and reduction.

__ 8. Why does an enzyme stop working if the temperature is raised too high or put in extreme acid or base?

__ 9. What is the difference in an enzyme that ends in –ase compared to an enzyme that ends in –synthase?

__ 10. Enzymes carry out chemical and energy transformations. Give an example of an energy transformation performed by biological systems.

__ 11. The reactant of an enzymatically catalyzed reaction is termed the ______, which binds to the ______of the enzyme. __ 12. How do enzymes work? a) They produce energy which they give to the substrate to increase the rate of reaction. b) They increase the local temperature, increasing the rate of reaction. c) They combine the substrate with a catalyst, increasing the rate of reaction. d) They lower the activation energy, increasing the rate of reaction. e) They combine the substrate with snRNA to increase the rate of reaction. __ 13. General term for the non-protein component of an enzyme is a: a) prosthetic group c) coenzyme e) co-enzyme b) cofactor d) co-inducer __ 14. Term for an organic, non-protein component of an enzyme is: a) prosthetic group c) coenzyme e) co-enzyme b) cofactor d) co-inducer __ 15. Lyases a. Electrons are removed from on molecule and added to another. __ 16. Isomerases b. Splits a molecule by the addition of water across its bond. __ 17. Transferases c. Hooks two molecules together using the energy from an NTP (e.g. ATP). __ 18. Hydrolases d. Removes a group forming a double bond or adds a group to a double bond. __ 19. Oxidoreductases e. The molecule keeps the same atoms, but they are rearranged. __ 20. Ligases f. Removes a group from one molecule and add it to another molecule