All Are True for the Isomerase Reaction of Glucose-6-Phosphate to Fructose-6-Phosphate

question 6

Multiple Choice

All are true for the isomerase reaction of glucose-6-phosphate to fructose-6-phosphate EXCEPT:

• A) Mg²⁺ is required for activity.
• B) it is an aldose to ketose isomerization.
• C) "moving" the carbonyl from C-1 to C-2 creates a new primary alcohol group at C-1.
• D) the reaction is irreversible with a large negative ΔG.
• E) the enzyme belongs to the isomerase class of enzymes.

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