Question

D Each enzyme is specihic of and because its shape catalyzes on certain reactions. The chemical reactions taking place in a cell will most likely speed up if the 3. A genetic material stops replicating. B the size of the cell increases. C the enzymes involved become inactive. D the concentration of the reactants is increased. 4. Enzymes A are able to heat up molecules so that they can react B provide CO2 for chemical reactions. C are biological catalysts. absorb excess heat so that reactions occur at low temperatures. Use the graph below to answer the next two questions. Intestinal g Gastric protease protease 10 12 pH 5. The contents of the small intestine have a pH greater than 7. When gastric protease (an enzyme) enters the small intestine, the activity of the gastric protease will probably A increase. B decrease. C increase at first, then decrease. D remain the same. 6. What is the optimum pH for the action of the enzyme intestinal protease? A 5 C 10 D 12 Subatrale Concentration Substrate C Gubstrale Concentraen 7. During an experiment, the amount of substrate is gradually increased and the amount of enzyme was kept the same. Which of the graphs above would best describe the results? ЕЕ Use the diagram and graph below to answer the next two quest pH6.5 Pepsin Trypsin pH2.5 pH 8 14. pH 9 PH 8. The graph above indicates that the enzyme pepsin would function best in the A mouth. B stomach. C small intestine. D large intestine. 9. Pepsin and trypsin are enzymes that are characterized as A sugars. B carbohydrates C lipids. D proteins. 10. A cell contains

Answer 1

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