One major difference between inorganic catalysts and organic catalysts is: A. Inorganic catalysts may not be compatible with biological parameters B. Organic catalysts are consumed during the chemical reaction C. Organic catalysts influence the activation energy of a reaction D. Inorganic catalysts decrease the probability a reaction will occur
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One major difference between inorganic catalysts and organic catalysts is:
A. Inorganic catalysts may not be compatible with biological parameters
B. Organic catalysts are consumed during the
C. Organic catalysts influence the activation energy of a reaction
D. Inorganic catalysts decrease the probability a reaction will occur
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- Which of the followingdescribe superior properties of enzymes (biological catalysts) over traditional chemical catalysts? a. They are mostly and generally operative under mild temperature, pressure, and pH conditions b. They are regulated only by substrate concentration c. They do not effect the reaction equilibrium, but lower the reaction's activation energy d. They are recycled at the end of the reaction Choose all that applyDefine the following terms: a. catalytic dyad b. transition state theory c. hydroxide ion catalysis d. reaction intermediate e. proximity and orientation effectsDefine the following terms:a. catalystb. transition statec. substrated. activation energye. active site2. Define the foll
- Which of the statement is true regarding equilibrium? The rate of the forward reaction exceeds the rate of the reverse reaction The concentration of the reactants and the concentration of the products remains constant The value of equilibrium constant will change if a catalyst is present O Increasing the concentration of reactants increase the equilibrium constantI. True or Flase a. An inhibitor may compete with the substrate for binding to the active site of an enzyme. b. Enzymes increase the rate of a chemical reaction by providing an alternative path with a lower activation energy. c. Enzymes are unconsumed during a reaction and can alter the position of chemical equilibrium.The function of enzymes is to:a. accelerate reactions to change the final resultb. produce otherwise non-existing reactionsc. stall reactions that would have happened otherwised. balance the pH in chemical reactionse. provide energy to biochemical reactions
- Which of the following statements is false? a. A reaction may not occur at a detectable rate even though it has a favorable equilibrium. b. After a reaction, the enzyme involved becomes available to catalyze the reaction again. c. For S → P, a catalyst shifts the reaction equilibrium to the right. d. Lowering the temperature of a reaction will lower the reaction rate. e. Substrate binds to an enzyme's active site.Which of the following are effects of catalyst that cause an increase in the rate of reaction? (This is a multi-select question. Select all that apply). a decrease in DG‡. an increase in DG. an increase in temperature. an increase in the energy of the molecules/ions of reactant. an increase in the number of molecules/ions of reactant with enough energy to overcome the activation energy barrier.Which of the following statements are correct about how enzymes accelerate chemical reactions (select all that apply)? A. Enzymes bind substrates to raise their effective concentration B. Enzymes enhance the rate of a chemical reaction C. Enzymes catalyze chemical reactions by destabilizing transition states D. Side chains of protein provide reactive groups that facilitate reaction E. Enzymes shift the equilibrium of a chemical reaction to favor product formation
- which of the following are true regarding chemical equilibrium (choose all that are true) a. chemical equilibrium only occurs if the ΔH is very large and negative b. the rate of the forward reaction is the same as the back reaction c. there is an equal amount of products and reactants d. the ΔH and Ea are relatively smallIn order for the reaction rate to rise the activation energy should be Select one: O O O O a. decreased b. increased c. decreased or increased d. not changed Riboflavin gives rise to cofactors:if the reaction given below occurs and pure A and B were mixed, which of the following would take place as equilibrium was established A + B ⇌ C a. the concentration of C would increase for a time, then remain constant b. the concentration of A would increase for a time, then decrease c. the concentration of B would increase for a time, then remain constant