CHEMICAL REACTIONS SCIENCE 101 SPRING 1999

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By the end of this section you need to be able to answer the following:

1. What is the difference in the chemical energy contained in the reactants and products of an exergonic reaction?  of an endergonic reaction?
2. Give some examples of exergonic reactions and of endergonic reactions.
3. What is an enzyme?
4. How does an enzyme lower the activation energy of a reaction?  Why does this increase the rate of that reaction?
5. What is enzyme specificity?  Explain how enzyme specificity occurs.
6. Explain the difference in competitive and noncompetitive inhibition.
7. How does pectinase increase the rate at which juice is released from fruit?
8. Explain how meat tenderizers act to tenderize meat.  What makes some tenderizers more effective than others?
9. From the name alone, what is the action of the following enzymes:  dehydrogenase, lactase, peptidase?