110 likes | 181 Views
Explore the essential molecules involved in anaerobic respiration, such as CO2, ethanol, lactic acid, and pyruvic acid. Learn about glycolysis as the first step and how it yields the only ATP in anaerobic respiration. Delve into alcoholic fermentation leading to ethanol and CO2 production, and lactic acid fermentation resulting in lactate formation. Discover insights into lactic acid burn experienced by runners and the concept of oxygen debt in athletes. Uncover the efficiency disparity between aerobic and anaerobic respiration, with aerobic respiration being significantly more efficient in ATP production.
E N D
Anaerobic Respiration Chapter 10.3
Important Molecules in anaerobic respiration • CO2: One of two products formed in alcoholic fermentation • Ethanol/ Ethyl Alcohol: One of two products formed in alcoholic fermentation • Lactic Acid/ Lactate: Product of lactic acid fermentation • Pyruvic Acid: Product of Glycolysis (2 per glucose molecule)
Glycolysis • As in aerobic respiration Glycolysis is the first step. It will yield the only ATP created in anaerobic respiration
Alcoholic Fermentation • glucose → 2 ethanol + 2 CO2 +2 ATP • Occurs in many bacteria and Fungi
Lactic Acid Fermentation • glucose → 2 lactate + 2 ATP
Lactic Acid Burn • Runners burn when muscles are loaded with lactic acid which causes a burning sensation. • The body’s natural response is pain. In an effort to stop the exercise and take in oxygen.
Oxygen Debt • The amount of oxygen needed to convert that lactic acid build up back into pyruvic acid. • This is why an athlete breathes heavy after muscle cramps the body is maintaining homeostasis by converting lactic acid back to pyruvates for normal respiration to resume.
Efficiency of Respiration • Aerobic Respiration is roughly 20x more efficient than anaerobic respiration. • Aerobic respiration produces: 38 ATP • Anaerobic respiration produces: 2 ATP