What are the circumstances that guide pyruvate to be transformed into ethanol? Which organisms or tissues utilize this pathway?

• A. Aerobic conditions, high glycolytic activity; found in muscle tissues and red blood cells
• B. Anaerobic conditions, low glycolytic activity; found in yeast and certain bacteria
• C. Anaerobic conditions, high glycolytic activity; found in yeast and certain bacteria
• D. Aerobic conditions, low glycolytic activity; found in muscle tissues and tumor cells

Answer: (C)