Phases of Cellular respiration
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Understandings:
• Phosphorylation of molecules makes them less stable (have more energy).
1) In glycolysis, glucose is converted to pyruvate in the cytoplasm.
liberating carbon dioxide.
• Phosphorylation of molecules makes them less stable (have more energy).
1) In glycolysis, glucose is converted to pyruvate in the cytoplasm.
- Glycolysis gives a small net gain of 2 ATP without the use of oxygen (this is an anaerobic stage). 4 ATP are made but 2 are used
- In aerobic cell respiration pyruvate is decarboxylated and oxidized, and converted into an acetyl compound and attached to coenzyme A to form acetyl coenzyme A in the link reaction.
liberating carbon dioxide.
- Energy released by oxidation reactions is carried to the cristae of the mitochondria by reduced NAD and FAD. (NADH, FADH2)
- In chemiosmosis protons diffuse through ATP synthase to generate 34 ATP.
- Oxygen is needed to bind with the free protons to maintain the hydrogen gradient, resulting in the formation of water.
Skill: Analysis of diagrams of the pathways of aerobic respiration to deduce where decarboxylation and oxidation reactions occur.