As 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.
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As 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.
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- Which of the following will occur if there is an increase in enzyme or substrate concentration? interfere with the reaction. increase the rate of reaction. decrease the rate of reaction. not change the rate of product produced reduce the rate of product produced.Which of the following statements is true about effect of substrate concentration on enzyme activity ? The rate of reaction increases as the substrate concentration increases up to certain limit at which the reaction rate is maximal (Vmax.) At Vmax, the enzyme is completely saturated with the substrate, At Vmax, any increase in substrate concentration don't affect the reaction rate. All of themEach enzyme has a specific which is the reactant that the enzyme will act upon. Induced Fit Model of Enzyme Action: The substrate induces a more complete fit of the active site around it. Active site can lower an EA barrier by: ງ
- All of the following are characteristics of the active site of an enzyme EXCEPT? Select the correct response. It has a complementary shape to its substrate. It is the binding site for many different kinds of molecules. It is found somewhere in the interior of the enzyme. It has less water content compared to the cytoplasm.When the enzyme hexokinase binds to glucose and ATP it undergoes a conformational change. All of the following are true about this enzyme-substrate binding EXCEPT: The active site changes shape so that it binds more tightly to the substrates The substrates are optimally positioned for the reaction to occur The substrates become contorted or strained, which increases their reactivity The activation energy of the reaction increasesAll of the following are characteristics of the active site of an enzyme EXCEPT? It has less water content compared to the cytoplasm. It is found somewhere in the interior of the enzyme. It is the binding site for many different kinds of molecules. It has a complementary shape to its substrate.
- Which statements are true? The transition state is the highest free energy that a reaction reaches during its progress from reactants to products. Enzymes alter the free energy of the transition state but not its chemical nature. High affinity binding of substrate by enzymes alters the equilibrium between reactants (substrates) and products. High affinity binding of substrate by enzymes can impede reaching the transition state. Steric and electrostatic interactions between the enzyme and substrate usually disfavor the ground state of substrate and favor the formation of the transition state. If ∆G‡(catalyzed) is less positive than ∆G‡(uncatalyzed) then the enzyme is enhancing the rate of the reaction. Low affinity binding of substrate by the enzyme must always lead to a slower rate of reaction compared to the uncatalyzed rate. There is no barrier to substrate binding to an enzyme, only to the chemical step.Indicate whether each of the following statements about an enzyme active site is true or false. It is the location where substrate molecules are produced. It always has a fixed, rigid geometry. It always has a geometrical shape exactly complementary to that of substrate. It always accommodates several structurally related substrates. It is the location where substrate molecules are converted to product molecules. It always has a shape that has a degree of flexibility to it. It always accommodates only one specific substrate.Which of the following affects the rate of enzyme driven reaction? rate constant air pressure concentration of enzyme concentration of substrate light intensity pH temperature
- Please select all of the following statements that are true. Cofactors involve the use of vitamins to assist enzymes Competitive inhibitors bind to the same active site as the substrate. When the substrate binds to the enzyme the reaction rate increases. Non-competitive inhibitors can act as both inhibitors and activators.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.Why must you only add the enzyme after all the other reagents have been added? Because until all reagents have been added the reaction mixture will not have the correct pH and/or ionic strength which may result in the enzyme been denatured and/or having reduced activity. Because until all reagents have been added the reaction mixture will not be at the correct temperature which may result in the enzyme been denatured and/or having reduced activity. Because until all reagents have been added the reaction mixture will not have the correct amount of substrate which may result in the enzyme not working optimally. Because the enzyme needs to be kept cold as long as possible, so it is not denatured and/or having reduced activity.