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Respiration (1. Steps (Food material is broken down into energy in the…
Respiration
1. Steps
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Step 2 in Yeast - Pyruvate (3C) is converted into ethanol (2C) and CO2 in a process called fermentation
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Step 2 in Humans etc: Pyruvate (3C) is broken down completely into 3 molecules of CO2 & H2O using O2 in the mitochondria
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Energy released during respiration is used to make ATP, the energy currency of the cell.
When ATP is broken down, a fixed amount of energy is released that can drive endothermic reactions in the cell
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