Biology WJEC Aerobic Respiration

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  • Created by: Katy
  • Created on: 09-11-12 11:13
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  • Aerobic respiration
    • Adenosine Triphosphate - Adenine, Ribose, 3 Phosphate groups
      • ATP needed for: Metabolic processes,(synthesis of protein and DNA), active transport, nervous transmission, secretion, glycolysis
    • ATP needed for: Metabolic processes,(synthesis of protein and DNA), active transport, nervous transmission, secretion, glycolysis
    • Glycolysis
      • Cytoplasm
      • Phosphate molecule added to glucose - Hexose Phosphate
        • Hexose Phosphate split into 2x Tripose Phosphate
      • Net Gain: 2 ATP  molecules, 2NADH
    • Link Reaction
      • Pyruvate diffuses into mitochondrial matrix
        • Pyruvate decarboxylated and dehydrogenated
          • 2 Carbon acetate combines with coenzyme A to form acetyl CoA
    • Krebs Cycle
      • Acetyl CoA combines with 4C acid
        • Undergoes series of reactions. Two steps involve decarboxylation. Four steps involve dehydrogenation.
          • Three molecules of NADH formed, 1 molecule of FADH formed (per turn)
    • Electron Transport Chain
      • Series of carriers and pumps releasing energy in the form of ATP
        • H atoms split into protins and electrons
          • Electrons transferred along electron carrierseach at lower energy level than previous one
            • Protons pumped from matrix into intermembrane space - sets up electrochemical gradient
              • Protons diffuse into matrix via ATP syhthetase
                • Electrons taken up by oxygen which combines with protons to form water
  • Glycolysis
    • Cytoplasm
    • Phosphate molecule added to glucose - Hexose Phosphate
      • Hexose Phosphate split into 2x Tripose Phosphate
    • Net Gain: 2 ATP  molecules, 2NADH
  • Pyruvate diffuses into mitochondrial matrix
    • Pyruvate decarboxylated and dehydrogenated
      • 2 Carbon acetate combines with coenzyme A to form acetyl CoA

Comments

mademoiselle

WOW this is GREAT THANK YOU!!!

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