Which of the following correctly describes how enzymes lower the activation energy of a biochemical reaction?Question 8Answera.Enzymes increase the temperature of the reaction, providing more energy to the reactants.b.Enzymes stabilize the transition state, reducing the energy required to reach it.c.Enzymes alter the equilibrium constant of the reaction, favoring product formation.d.Enzymes are consumed in the reaction and must be continually replaced.

Enzymes are catalysts that affect biological reactions. How do enzymes change the rates of reactions in the body?A.Enzymes decrease reaction rates by decreasing the energy of the products.B.Enzymes decrease reaction rates by lowering the activation energy.C.Enzymes increase reaction rates by lowering the activation energy.D.Enzymes increase reaction rates by increasing the energy of the reactants.

Enzymes are able to speed up a reaction by lowering the activation energy:Question 59 Answer Choices   A.  only if the reaction is exergonic.   B.  only if the reaction is endergonic.   C.  if the reaction is endergonic or exergonic   D.  if ΔG is positive.

Which of the following is responsible for lowering the activation energy of a chemical reaction?Group of answer choicesATPadditional buildup of substrateenzyme activityADP accumulation

All of the following are true of enzyme-catalyzed reactions EXCEPT:A.the presence or absence of a post-translational modification may alter the activation energy Ea of the reaction.B.the enzyme does not affect the net reaction rate if the ratio of products to reactants equals Keq for the reaction.C.substrates can covalently modify the enzyme to cause a permanent decrease in the enzyme's turnover number kcat.D.the saturation of enzyme active sites by substrate molecules limits the maximum reaction velocity Vmax.Submit

Enzymes catalyze reactions byGroup of answer choicesnone of these is correctlowering activation energy.raising activation energy.decreasing the entropy of the reaction.adding energy to the reaction.