| Question | Answer |
| What is Cell Metabolism? | the sum of All Chemical Reactions in a cell |
| What determines Reation Direction/Law of Mass Action? | INCREASES in Reactant --> INCREASES in Product formation |
| What are some of the determinants of Reaction Rates? | 1. Chemical Concentrations of Reactants; 2. Temperature; 3. Activation Energy; 4. Catalysts |
| How does Heat determine Reaction Rates? | 1. provides high impact collisions need to impart Activation Energy |
| What is Activation Energy? | Kinetic Enregy NECESSARY to start a Chemical Reaction |
| What is the function of Catalysts? | SPEEDS up Reaction, but is not consumed |
| Whata re Enzymes? | metabolic Catalysts |
| What are the functions of Enzymes? | 1. SPEED Reactions w/o being altered themselves; 2. DON"T CAUSE Reactions that would otherwise occur |
| What is a Substrate? | Reactant: any Organic Molecule BOUND To or ACTED on by an Enzyme |
| What is an Enzyme? | 3-Dimensional Protein Catalyst |
| What is an ES-Complex? | Substrate ADSORBED onto the surface of Enzyme, forming TEMPORARY Chemical Association |
| What is Geometric Specificity? | one Enzyme reacts with only Specific Substrates |
| What is an Active Site? | area of an Enzyme molecule that fits the Geometric Configuration of a Specific Substrate |
| What is the basic scheme of Metabolic Reactions? | Enzyme + Substrate --> <-- ES-Complex --> <-- Products + Enzyme |
| What is the fuction of Enzyme Action? | LOWERS Activation Energy requirements |
| How does Enzyme Action LOWER Activation Energy? | 1. WEAKENS/distorts existing bonds within a substrate or changes its shape; 2. promtes new bonds by properly ORIENTING 2 Substrates |
