Aerobic Cellular Respiration EQ: Why is the

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Aerobic Cellular RespirationEQ Why is the
Mighty Mitochondria so Mighty and necessary
for life?

• The what, when, where, why and how

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Cellular Respiration The What

• Process by which food is broken down by the
  body's cells to produce energy, in the form of
  ATP molecules.
• It is summarized using the following equation
• C6H12O6 6O2 ? 6CO2 6H2O ATP

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Summary or Overview of Cellular Respiration How
many ATP is one Glucose molecule worth?
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Glycolysis
The Where and When?
Occurs in the cytoplasm before entering the
mitochondria.
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The What and How Glycolysis
Tutorial
Animation
Process in which one molecule of glucose is
broken in half, producing two 3-carbon molecules
of pyruvic acid (pyruvate)
(pg. 225)
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The Where
Krebs Cycle
Krebs Cycle occurs in the Matrix
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Krebs Cycle TutorialThe where and how
Krebs Cycle Break Down
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For every Pyruvate that enters the Krebs cycle
The What

• 3 molecules of carbon dioxide are released
• 1 molecule of ATP is formed
• 4 molecules of NADH
• 1 molecule of FADH2 are produced.
• NADH FADH2 transfer e- to the ETC make ATP.

Remember there are two Pyruvate that enter the
Krebs cycle per glucose.
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Inventory of ATP and Electron Carriers so far
Occurs in Matrix of Mitochondria
2 Pyruvic Acid 2 net ATP 2 NADH
6 CO2 (waste) 2 ATP 8 NADH 2 FADH2
Occurs in Cytoplasm
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The ETC
Electron Transport Chain is found here.
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The e-s carried by NADH and FADH2 are dropped
off at the ETC and used to make ATP.

• This process is similar to the light rxns of PSN.

ETC Tutorial
Another ETC tutorial
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Why do we need O2?

• After seeing what oxygen does at the end of the
  ETC, can you infer why a lack of oxygen for a
  prolonged period of time would be fatal?
• Support your answer.