M8L3 Cell Res

Phase 1: Glycolysis

Phase 2: Kreb's Cycle

Phase 3: Electron Transport

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​Cellular Respiration

1. Glucose is split into two G3P molecules

   *This step requires 2 ATP to be used

2. G3P is converted to Pyruvate

   *This step makes 4 ATP and 2 NADH

What is our NET production of ATP if we spent two to make four?

​Phase 1: Glycolysis

In a "preparatory" reaction Pyruvate is converted to Acetyl CoA

1. Pyruvate is converted to Acetyl CoA

2. CO2 is released as a waste product

3. Acetyl CoA joins with a 4-C molecule to form citric acid.

4. NADH and FADH2 are created

5. 2 ATP are produced

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​Phase 2: Kreb's Cycle

​1. NADH and FADH2 deliver electrons to the ETC
2. As electrons move along the chain, they power the movement of H+ across the membrane
3. As H+ flows through ATP synthase
4. This makes about 32-34 ATP
5. At the end of the chain, oxygen accepts electrons and bonds with hydrogen to form water

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Phase 3: Electron Transport Chain