Question

33. Once inside a cell, glucose is rapidly phosphorylated to glucose-6-phosphate. What is the main purpose of this phosphorylation? Write its chemical reaction. a. to keep glucose inside the cell b. to form a high-energy compound c. to activate PFK-1 d. to prevent mutarotation 34. Enzymes which catalyze the same reaction are called ___________. a. isozymes b. complementary enzymes c. cofactors d. catalysts 35. Which applies to fructose 1,6-bisphosphate? Write the complete chemical reaction involved in the formation of fructose 1,6-bisphosphate during glycolysis. a. activator of pyruvate kinase b. product of PFK-1 catalyzed step in glycolysis c. isomer of glucose 1,6-bisphosphate d. all of the above 36. How does the number of molecules of ATP produced compare for conversion of one molecule of either glucose or fructose to pyruvate? a. fructose produces one less ATP than glucose b. fructose produces the same number of ATPs c. fructose produces one more ATP than glucose d. fructose produces twice the number of ATP compared to glucose

          33. Once inside a cell, glucose is rapidly phosphorylated to glucose-6-phosphate. What is the main purpose of this phosphorylation? Write its chemical reaction.
   a. to keep glucose inside the cell
   b. to form a high-energy compound
   c. to activate PFK-1
   d. to prevent mutarotation

34. Enzymes which catalyze the same reaction are called ___________.
   a. isozymes
   b. complementary enzymes
   c. cofactors
   d. catalysts

35. Which applies to fructose 1,6-bisphosphate? Write the complete chemical reaction involved in the formation of fructose 1,6-bisphosphate during glycolysis.
   a. activator of pyruvate kinase
   b. product of PFK-1 catalyzed step in glycolysis
   c. isomer of glucose 1,6-bisphosphate
   d. all of the above

36. How does the number of molecules of ATP produced compare for conversion of one molecule of either glucose or fructose to pyruvate?
   a. fructose produces one less ATP than glucose
   b. fructose produces the same number of ATPs
   c. fructose produces one more ATP than glucose
   d. fructose produces twice the number of ATP compared to glucose

Added by Rebecca W.

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