Question

Which metabolic pathway produces carbon dioxide as a by product?

Answer 1

Krebs cycle in ( electron transport chain )
aerobic respiration

Answer 2

Answer:

Fermentation (Anaerobic Respiration)

Explanation:

• Fermentation is another anaerobic (non-oxygen-requiring) pathway for glucose breakdown that is used by many different types of organisms and cells.
• The only energy extraction pathway in fermentation is glycolysis, with one or two additional reactions tacked on at the end.
• The pyruvate produced by glycolysis is converted to ethanol and carbon dioxide in two steps during ethanol fermentation.
• First, the pyruvate releases carbon dioxide to form acetaldehyde, a two-carbon compound.
• Following that, NADH reduces acetaldehyde to ethanol, regenerating NAD+ for use in glycolysis.
• One molecule of glucose yields two molecules of carbon dioxide and two molecules of ethanol.

#SPJ2