MDCAT Biology MCQ #615

MDCAT Biology MCQ #615

1. Question 1

   Q1. What is the primary function of the enzyme phosphofructokinase-1 in glycolysis?

   • A) To convert fructose-6-phosphate into fructose-1,6-bisphosphate
   • B) To convert glucose-6-phosphate into glucose-1-phosphate
   • C) To convert pyruvate into acetyl-CoA
   • D) To convert phosphoenolpyruvate into pyruvate

   Answer: To convert fructose-6-phosphate into fructose-1,6-bisphosphate

   Explanation: Phosphofructokinase-1 catalyzes the conversion of fructose-6-phosphate into fructose-1,6-bisphosphate, a key regulatory step in glycolysis.