Respiration WJEC BY4

This is a basic summary of the stages of respiration as studied on the WJEC exam board.

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  • Created by: Lydia
  • Created on: 04-11-12 17:25
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  • Respiration
    • Glycolysis
      • Occurs in the Cytoplasm
      • Glucose is broken down into two molecules of Pyruvate.
        • Pyruvate molecules then move into the mitochondrial matrix for the link reaction
      • The overall net yield of ATP for this stage of respiration is two molecules of ATP
      • Four molecules of reduced NAD are also produced
    • The Link Reaction
      • Pyruvate molecules then move into the mitochondrial matrix for the link reaction
      • Pyruvate is converted into Acetyl CoenzymeA with the addition of a coenzymeA group
        • Acetyl CoenzymeA (2C) combines with Oxaloacetate (4C) to form Citric Acid (6C)
    • The Electron Transport Chain
      • They are split into their H+ ions and their electrons and the energy from the movement of these ATP is produced
    • The Krebs Cycle
      • Acetyl CoenzymeA (2C) combines with Oxaloacetate (4C) to form Citric Acid (6C)
      • Many molecules of reduced NAD and FAD are formed
        • These then enter the electron transport chain
          • The Electron Transport Chain
            • They are split into their H+ ions and their electrons and the energy from the movement of these ATP is produced

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