Anaerobic Respiration
- Created by: LHaywood
- Created on: 05-05-15 18:17
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- Anaerobic Respiration
- Plants
- Glycolysis continues to happen in the absence of oxygen continuously producing NADH and pyruvate
- These have to be reformed regularly to keep glycolysis going
- The hydrogen ion on the NADH molecule in particular needs to be removed to regenerate NAD
- NAD is regenerated by the pyruvate accepting the hydrogen ions from NADH and releasing carbon dioxide to produce ethanol.
- The only ATP formed in anaerobic respiration is that made in glycolysis so only 2 ATP as pyruvate can't go on to the link reaction because it is now ethanol
- Glycolysis continues to happen in the absence of oxygen continuously producing NADH and pyruvate
- Animals
- The ability to anaerobically respire is essential to animals survival.
- In low oxygen concentrations such as underwater, in mountains or straight after birth it prevents death
- Animals regenerate NAD by reducing the pyruvate to lactate
- This is a reversible reaction so lactate returns to pyruvate in the presence of oxygen. This is known as repaying the oxygen debt
- Lactate causes muscle fatigue and cramp if it is allowed to accumulate so must be oxidised or taken to the liver to form glycogen
- The only ATP formed in anaerobic respiration is that formed in glycolysis so is 2 ATP. Only a small fraction of that formed in aerobic respiration
- The ability to anaerobically respire is essential to animals survival.
- Plants
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