Anaerobic Respiration of Mammals and Yeast
- Created by: lauren.glendenning
- Created on: 25-04-16 20:07
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Anaerobic Respiration of Mammals and Yeast...
What happens if there is no oxygen?
- Oxygen acts as final electron acceptor in oxidative phosphorylation
- If oxygen isn't present, electron transport chain can't function and neither can Kreb's Cycle or the link reaction
- The only respiration left to occur is the anaerobic part of glycolysis as a source of ATP
- The reduced NAD generated during the oxidation of glucose, has to be reoxidised so glycolysis can still happen
- Eukaryotic cells have two pathways for anaerobic respiration to take place -
- Fungi (e.g. yeast) use ethanol fermentation
- Eukaryotes use lactate fermentation
- Neither of these pathways produce ATP, but two molecules of ATP are made per every glucose molecule by substate-level phosphorylation during glycolysis
- Glycolysis produces two molecules of ATP, two molecules of reduced NAD, and two molecules of pyruvate per one glucose molecule
What happens if there is no oxygen?
- Oxygen acts as final electron acceptor in oxidative phosphorylation
- If oxygen isn't present the electron transport chain can't function, and Kreb's cycle and the link reaction also stop
- This just leaves the anaerobic process of glycolysis as a source of ATP
- The reduced NAD generated by the oxidation of glucose has to be reoxidised so glycolysis can keep happening
- Eukaryotic cells have two different pathways of anaerobic respiration -
- Fungi (e.g. yeast cells) use ethanol fermentation
- Eukaryotic cells use lactate fermentation
- Neither of these pathways produce ATP, but two ATP molecules are made for every one glucose molecule due to substrate-phosphorylation during glycolysis
- Glycolysis produces two molecules of ATP, two molecules of reduced NAD and two molecules of pyruvate per every one glucose molecule
What happens if there…
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