As you change the pH from a low pH to a high pH what happens to the rate of an enzymatic reaction, in general terms? A The reaction rate will steadily increase as the pH increases. B The reaction rate will steadily decrease as the pH increases. C The reaction rate will start low, then increase, and then decrease again as the pH increases. D The reaction rate will not change as the pH increases.
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As you change the pH from a low pH to a high pH what happens to the rate of an enzymatic reaction, in general terms?
| A |
The reaction rate will steadily increase as the pH increases. |
|
| B |
The reaction rate will steadily decrease as the pH increases. |
|
| C |
The reaction rate will start low, then increase, and then decrease again as the pH increases. |
|
| D |
The reaction rate will not change as the pH increases. |
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- What factors of the physical environment impact enzymatic activity? Select all that apply. A. Salt concentration B. Changes in temperature C. Coenzymes D. pH concentrationAs you change the temperature from a low temperature to a high temperature what happens to the rate of an enzymatic reaction, in general terms? A The reaction rate will steadily increase as the temperature increases. B The reaction rate will steadily decrease as the temperature increases. C The reaction rate will start low, then increase, and then decrease again as the temperature increases. D The reaction rate will not change as the temperature increases.Which of the following do enzymes change?∆G ; reaction rate; types of product generated; activation energy; the laws ofthermodynamics.
- When substrate concentration [S] << Km, the rate of an enzymatic reaction is increased by A. increasing kcat/Km B. increasing total enzyme concentration C. increasing [S] D. A and B E. A, B and C increasing kcat/Km increasing total enzyme concentration increasing [S] A and B A, B and CAs the amount of substrate is increased in an enzyme-substrate reaction, which of the following will happen? the reaction is inhibited the amount of product increases. enzymes become denatured faster. enzymes work faster. the amount of enzyme also increases proportionally."An enzyme reaches a maximum rate at high substrate concentration because it has a fixed number of active sites where substrate binds", is true or false.
- Choose only the letter, no explanation needed. Enzyme activity is affected by a variety of factors. What factor causes the enzyme to denature if it becomes extremely high? * Choices: A. Water's Effect B. pH C. Temperature D. Activator's Effect An inhibitor binds to the enzyme's active site, preventing the substrate from binding to it. What conclusions can you make from this situation? * A. No reaction occurred B. Non-competitive inhibition occurred C. Enzyme activity occurred D. Competitive inhibition occurred Each enzyme is very selective when it comes to its substrate. What can you conclude from this statement? * A. Any substrate can bind to the active site. B. Enzymes are used up in the reaction. C. Only a specific substrate can bind to the active site. D. Enzymes break down when not used. Lock : Key :: Active Site : _____________________________ * A. Substrate B. Active Site C. Coenzyme D. Cofactor Enzymes only speed up biological functions, so they are NOT used up in the…Which of the following statements is TRUE in describing the activity of the lactaseenzyme? A. Lactase is converted to glucoseB. One lactase enzyme can catalyze many reactions C. The shape of lactase does not change during the reaction D. Lactase can function effectively at many different pH levelsAll of the following increase enzymatic activity except a. an increase in temperature. b. an increase in pH. c. an increase in concentration of the substrate. d. an increase in concentration of the enzyme that catalyzes the reaction.
- An inhibitor can decrease the number of ATP produced to 34 moles. Where does the inhibitor act? Name the enzyme that is in inhibited and the pathway with which it is usually associated.What are the steps for an enzyme to create a product in order: The energy of activation is lowered so the reaction can happen quicker. Substrate attaches to the active site. The product is created and released from the active site. The energy of activation is lowered so the reaction can happen slower. A specific substrate attaches to the active site.the graph shows the rate of reaction data for 2 different enzymes. one of these enzymes is found in the stomach, the other is found in the mouth. does both of these enzymes have the same optimum ph? why?