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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Solved in 3 steps
- 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 reactionWhen you heat a solution past the optimum for an enzyme? A. the active site permanently binds substrate via covalent bonding B. the enzyme stiffens and slows down C. the enzyme starts to denature_________ fit is substrate binding which induces a conformational change in an enzyme, that improves the catalytic activity of that enzyme.
- The lock-and-key theory described the action of ______. Select one: a. enzymes as locks that fit other enzymes b. substrates as locks that fit different enzymes c. enzymes as keys that fit different chemicals d. substrates as keys that fit different enzymesEnzymes 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.Which of these statements about enzymes is true? a,Most proteins are enzymes. b.Most enzymes are proteins. c.Enzymes are changed by the reactions they catalyze. d.The active sites of enzymes have little specificity for substrates.
- An allosteric site is the location on an enzyme’s surface wherea. the substrate binds.b. the signal molecule binds.c. catalysis takes place.d. ATP binds.Which of the following accurately describes how an enzyme functions? a. reduces the energy content of the products b. allows for the exothermic reaction of materials that are usually endothermic c. changes the reaction mechanism effectively reducing the activation energy d. shifts the equilibrium for the reactionWhat 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 inhibition
- What is a regulatory mechanism in which a reaction product slows or stops a metabolic pathway that produces it? A. Phosphorylation B. Feedback inhibition C. Electron transfer chain D. CoenzymeFor reactions to occur there needs to be what level of substrate and enzyme concentrations? Select one: a. Greater amount of substrate b. Lower amount of substrate c. Just the right amount of substrateWhy is an enzyme considered "specific"? A. Only one type of enzyme is found in our bodies B. Only certain enzymes can pass through the cell membrane C. Its active site must match the substrate to do its job D. The enzyme can only move from high to low concentration