MDCAT Biology MCQ #420

During the process of glycolysis, most steps involving phosphate transfer generate energy, but which step represents an energy-investment anomaly?

MDCAT Biology MCQ #420

  1. Question 1

    Q1. During the process of glycolysis, most steps involving phosphate transfer generate energy, but which step represents an energy-investment anomaly?

    • A) 1,3-bisphosphoglycerate to 3-phosphoglycerate
    • B) Phosphoenolpyruvate to Pyruvate
    • C) Glucose to Glucose-6-phosphate
    • D) Glyceraldehyde-3-phosphate to 1,3-bisphosphoglycerate

    Answer: Glucose to Glucose-6-phosphate

    Explanation: Glucose phosphorylation consumes ATP, whereas the others produce it. 1,3-bisphosphoglycerate is tempting as it is the first site of ATP generation.