Question

Evolutionary biologists maintain that glycolysis is a metabolic pathway that evolved on earth prior to the divergence of life on planet Earth into different Domains. Which of the following statements best supports this hypothesis?

• A. The process of glycolysis, with few molecular modifications, is used by all cells on the planet regardless of the domain to which they belong.
• B. Glycolysis is the only metabolic pathway the does not use or require the presence of oxygen.
• C. The process of glycolysis is used by all eukaryotic organisms from all Domains and Kingdoms.
• D. The enzymes used in the process of glycolysis are found in the cytosol of cells rather than in a membrane-enclosed organelle.

Answer 1

The correct option is B Glycolysis is the only metabolic pathway the does not use or require the presence of oxygen.

Glycolysis is the process of break down of Glucose (6C) into two molecules of Pyruvate. It does not require oxygen and is a common pathway for formation of energy molecules in both aerobic and anaerobic organisms, early earth atmosphere did not contain Oxygen and aerobic organisms evolved from the anaerobic

So, the correct answer is 'Glycolysis is the only metabolic pathway the does not use or require the presence of oxygen'