Anaerobic respiration (AQA)
- Created by: Madi Thorne
- Created on: 10-11-14 19:56
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- Anaerobic respiration
- Occurs in the absence of oxygen
- Reduced NAD must be turned back into NAD
- The Hydrogen is accepted by the pyruvate
- Plants and some microorganisms
- Ethanol produced
- Pyruvate loses CO2 and accepts the H from the NAD
- Pyruvate + NADH --------> ethanol + CO2 + NAD
- Yeast used for fermentation to produce ethanol
- Animals
- Lactate produced
- Causes cramp and muscle fatigue
- Means of overcoming temporary oxygen shortage
- Most common in muscles
- Oxygen used more rapidly than it's supplied
- Oxygen debt
- Essential for muscles to continue to work
- Eg when fleeing from a predator
- Oxygen used more rapidly than it's supplied
- Each pyruvate takes up 2 H atoms from NADH
- Pyruvate + NADH -----> lactate +NAD
- Lactate must be oxidised back to pyruvate
- Further oxidised to release energy
- Or converted to glycogen
- In the liver
- When oxygen is present again
- Lactate produced
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