What is the function of the active site of an enzyme? a. Involved in the catalytic reaction of the enzyme b. Inhibit the enzymatic activity c. Binding of regulators d. Binding of products after the reaction
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What is the function of the active site of an enzyme?
a. Involved in the catalytic reaction of the enzyme
b. Inhibit the enzymatic activity
c. Binding of regulators
d. Binding of products after the reaction
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- How does a non-competitive inhibitor decrease the rate of an enzyme reaction? O A. by binding at the active site of the enzyme B. by changing the shape of the active site on the enzyme, without binding to active site O C. by changing the free energy change of the reaction D. by acting as a coenzyme for the reactionWhat is the active site of an enzyme? A. Specific molecule that acts as the reactant in an enzyme-mediated reaction B. An ion or nonprotein organic molecule that associates with an enzyme and is necessary for its function C. The part of an enzyme where substrates bind and a reaction occurs D. A specific ion or molecule that binds to an enzyme to enhance or inhibit its activityHow can a noncompetitive inhibitor affect enzymeactivity without binding to the active site?a. It binds to another location on the enzyme, altering the active site shape.b. It physically blocks the entrance to the active site.c. It alters the shape of the substrate, making it difficult for it to bind to theactive site.d. It degrades the substrate.
- Which of the following is a primary function of the active site of an enzyme? a. It binds allosteric regulators of the enzyme. b. It binds noncompetitive inhibitors of the enzyme. c. It catalyzes the reaction associated with the enzyme. d. It is activated by the presence of the end product of the metabolic pathway in which the enzyme is involved. Clear my choice Question 2 Not yet answered Points out of 2.00 Flag question Question text Which of the following statement about the mass spectrometry is true? a. Large amount of protein sample is needed for mass spectrum, and thus it is very expensive. b. It is a powerful method to determine the 3-dimensional structure of proteins. c. It can be sued for protein location in a living cell. d. It can be used to measure the molecular weight of proteins. e. It can be used to determine the stability of a protein structure in solution. Clear my choice…Enzymes catalyze a chemical reaction by A. decreasing the amount of ATP required to activate a reaction B. increasing the amount of ATP required to activate a reaction C. slowing down the reaction to obtain more products D. increasing the reaction to obtain more products E. decreasing the amount of ATP required and obtaining more products.what is the first step in an enzyme-catalyzed reaction? a. formation of enzyme-substrate complex b. ionization of enzyme c. dimerizing the substance d. catalysis of enzyme
- This reaction is catalyzed by a? Which class of enzymeWhen an enzymatic reaction is in progress, do you expect to see happen to the amount of substrate? A It will increase as the reaction proceeds. B It will decrease as the reaction proceeds. C The amount will not change as reaction proceeds. D It is not possible to predict what will happen to it as the reaction proceeds.How does an enzyme affect a chemical reaction? Select all that apply. A. Lowers the activation energy B. Decreases the rate of the reaction C. Increases the activation energy D. Increases the rate of the reaction
- What is it called when the final product of an enzymatic pathway acts as a modulator for the first enzyme in the pathway? a. isoenzyme activation b. relative specificity c. feed back inhibition d. competitive inhibitionWhich of these is not true about enzymes? A. Most of them are proteins B. Are changed at the end of the reaction C. Can only speed up the rate of the reaction D. Very specific in function E. Work better in specific mediumWhich statement is true about noncompetitive inhibition? a. Binding of the inhibitor occurs to the active site of the enzyme b. Inhibition is irreversible c. Increasing the amount of substrate does not reverse the inhibition d. We talked about it in context of aspirin inhibiting blood clotting
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