Cellular Respiration

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Cellular Respiration
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Cellular Respiration

• A process that uses energy extracted from
  macromolecules (glucose) to produce energy (ATP)
  carbon dioxide (CO2) and water (H2O).
• The Process requires Oxygen.
• C6H12O6 6O2 6CO2 6H2O energy

• Catabolic or Anabolic?
• Exergonic or Endergonic?

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Questions and Answers

• What is Respiration for?
• To produce energy for living organisms
• In what kinds organisms does cellular respiration
  take place?
• ALL Living organisms
• Animals - Heterotrophs consumers.
• Plants - Autotrophs producers.

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Where Does Cellular Respiration Take Place?

• It actually takes place in two parts of the cell
• Glycolysis occurs in the cytoplasm
• Krebs Cycle electron transport chain take place
  in the mitochondria

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Review of Mitochondria Structure

• Smooth outer Membrane
• Folded inner membrane
• Folds called Cristae
• Space inside cristae called the Matrix

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The 3 Stages of Cellular Respiration.

• Glycolysis
• The Krebs Cycle
• The Electron Transport Chain

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Glycolysis Summary

• Takes place in the Cytoplasm
• Glucose split into two smaller molecules (Pyruvic
  Acid)
• A little ATP is also produced (2 molecules)
• Electrons produced.

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Krebs Cycle Summary

• Requires Oxygen (Aerobic)
• Cyclical series of chemical reactions that
  produces CO2 and a little ATP (2 molecules) and
  electrons.
• Takes place in matrix of mitochondria.

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Electron Transport Chain Summary

• Occurs Across the Inner Mitochondrial membrane
  (Cristae)
• Uses electrons produced in Glycolysis and Krebs
  stages for energy.
• Mucho-Uber ATP Produced (32 molecules)
• H2O also produced

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Summary of Cellular Respiration
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Practice Diagram 1
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Practice Diagram 2
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Its Complicated ?

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