Illustrate glucose molecule executes the Krebs cycle twice

Question

Why can it be stated that each glucose molecule executes the Krebs cycle twice?

Answer 1

Each and every glucose molecule “cycles” the Krebs cycle twice since after glycolysis each utilized glucose has produced two pyruvic acid molecules and each pyruvic acid is transformed in a 1:1 proportion into acetyl CoA. All acetyl CoA then cycles the Krebs cycle once.