Which statement best supports the hypothesis that glycolysis is an ancient metabolic pathway that originated before the last universal common ancestor of life on Earth?
A) Glycolysis is found in all eukaryotic cells.
B) Glycolysis is widespread and is found in the domains Bacteria, Archaea, and Eukarya.
C) Ancient prokaryotic cells, the most primitive of cells, made extensive use of glycolysis long before oxygen was present in Earth's atmosphere.
D) Glycolysis neither uses nor needs O2.
E) The enzymes of glycolysis are found in the cytosol rather than in a membrane-enclosed organelle.
Answer: B