14. When you tested enzyme activity at 0, 22 and 37C you determined that the enzyme had the fastest rate of reaction at 37C. How do you know? Group of answer choices A) When added to stop solution, the 37C reaction was more yellow than the others B) Reaction gradually turned more yellow than the others C) Reaction at 37C changed pH the most D) When added to stop solution, the 37C reaction was less yellow than the others
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Step 1: Monitor the change in product formed or substrate depleted to determine enzyme activity. Show more…
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2( 7 pts). What will be the most likely effect influence of the following changes on the rate of an enzyme-catalyzed reaction that takes place in the cell? Will the change increase, decrease; have no effect on the reaction rate? Increase the substrate concentration. Increase the temperature from 15°C to 37°C. Add non-competitive inhibitor. Addition of inorganic solvent. Change the pH from 7 to 2. Increase the temperature from 37°C to 80°C. Increase the enzyme concentration.
Enzymes usually function best at an optimal pH and temperature. The following graph shows the effectiveness of two enzymes at various temperatures. (FIGURE CAN'T COPY) a. At which temperature does enzyme A perform best? Enzyme B? b. One of these enzymes is found in humans and the other in thermophilic (heat-loving) bacteria. Which enzyme would you predict comes from which organism? c. From what you know about enzyme structure, explain why the rate of the reaction catalyzed by enzyme A slows down at temperatures above $40^{\circ} \mathrm{C}\left(140^{\circ} \mathrm{F}\right)$
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