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To Be Metabolized, Glucose Must Be Converted to Glucose 6-Phosphate Δ\Delta

Question 233

Multiple Choice

To be metabolized, glucose must be converted to glucose 6-phosphate.However, the phosphorylation of glucose to form glucose 6-phosphate is endergonic with a positive Δ\Delta G.How do cells circumvent this problem?


A) The reaction is catalyzed by an enzyme, which allows the reaction to proceed by changing its Δ\Delta G.
B) The reaction is catalyzed by an enzyme, which allows the reaction to proceed by lowering its activation energy.
C) An enzyme raises the activation energy barrier to favor glucose 6-phosphate formation.
D) An enzyme changes the equilibrium constant for the reaction to favor glucose 6-phosphate formation.
E) The reaction is coupled to the hydrolysis of ATP, making the entire process exergonic.

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