MDCAT Biology MCQ #476

Which specific step in the preparatory phase of glycolysis involve the conversion of an aldose sugar into a ketose sugar?

MDCAT Biology MCQ #476

  1. Question 1

    Q1. Which specific step in the preparatory phase of glycolysis involve the conversion of an aldose sugar into a ketose sugar?

    • A) Glucose to Glucose-6-phosphate
    • B) Glucose-6-phosphate to Fructose-6-phosphate
    • C) Fructose-6-phosphate to Fructose-1,6-bisphosphate
    • D) G3P to 1,3-bisphosphoglycerate

    Answer: Glucose-6-phosphate to Fructose-6-phosphate

    Explanation: Glucose-6-phosphate is isomerized to fructose-6-phosphate; the initial step is the phosphorylation of glucose to glucose-6-phosphate.