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 widespread and is found in the domains Bacteria, Archaea, and Eukarya.
B) Glycolysis neither uses nor needs O2.
C) Glycolysis is found in all eukaryotic cells.
D) The enzymes of glycolysis are found in the cytosol rather than in a membrane-enclosed organelle.
E) Ancient prokaryotic cells, the most primitive of cells, made extensive use of glycolysis long before oxygen was present in Earth's atmosphere.

Question

Quizplus · Accepted Answer

The fact that glycolysis is widespread and present in all three domains of life (Bacteria, Archaea, and Eukarya) suggest that it is an ancient metabolic pathway that predates the divergence of these domains.

Which Statement Best Supports the Hypothesis That Glycolysis Is an Ancient