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 requires O₂. C)Glycolysis occurs in all eukaryotic cells. D)The enzymes of glycolysis are localized in the cytosol rather than in a membrane-enclosed organelle.

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The fact that glycolysis is found in all three domains of life (Bacteria, Archaea, and Eukarya) supports the hypothesis that this metabolic pathway originated before the last universal common ancestor of life on Earth. This is because if glycolysis was an evolutionarily recent pathway, it would be expected to be found in only a subset of organisms or in specific lineages of organisms, rather than being found in such a wide range of organisms.

Which Statement Best Supports the Hypothesis That Glycolysis Is an Ancient