MDCAT Biology MCQ #618

MDCAT Biology MCQ #618

1. Question 1

   Q1. What is the primary function of the enzyme pyruvate dehydrogenase in cellular respiration?

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

   Answer: To convert pyruvate into acetyl-CoA

   Explanation: Pyruvate dehydrogenase catalyzes the conversion of pyruvate into acetyl-CoA, linking glycolysis to the citric acid cycle.