Question

The number of molecules of pyruvic acid formed from one molecule of glucose at the end of glycolysis is

• A. 1
• B. 2
• C. 3
• D. 4

Answer 1

Answer: (B)

2

The 6-carbon molecule glucose (C${}_6$H${}_{12}$O${}_6$) is converted into two 3-carbon molecules of pyruvate (C${}_3$H${}_4$O${}_3$) at the end of glycolysis as shown in the diagram above.