Cell Energy: Cellular Respiration

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Cell Energy Cellular Respiration
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Cellular Respiration

• The process where stored energy is converted to a
  usable form.
• Oxygen and glucose are converted to carbon
  dioxide, water, and ATP.

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Cellular Respiration Equation

• (Opposite of photosynthesis)
• O2 C6H12O6 ? CO2 H2O ATP
• (oxygen) (glucose) ? (carbon dioxide)
  (water) (energy)

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Who performs cellular respiration?

• All organisms!!!

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Why is cellular respiration important?

• Cellular respiration is the process organisms use
  to obtain energy from the food they eat.
• Cells use the energy from cellular respiration
  for growth, repair, and maintenance.

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Glycolysis (Glucose-Breaking)

• Takes place in the cytoplasm
• The glucose molecule is broken into two pieces.
• Glucose is converted to pyruvic acid this
  conversion produces 2 ATP molecules.

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Aerobic Respiration

• Aerobic means with oxygen
• Oxygen is required for these processes to occur
  it is the final acceptor of electrons
• 34 ATP are produced
• Krebs cycle the electron transport chain.

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MitochondrionThe Powerhouse of the Cell

• Aerobic respiration takes place in the
  mitochondrion.
• This is where most of the ATP is produced.
• http//cyberbio.mit.edu8001/esgbio/cb/org/mito.gi
  f

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The Krebs Cycle
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Cellular Respiration Pathways
Glucose
Glycolysis
2 ATP
Without oxygen
With oxygen
Anaerobic Respiration (fermentation)
Aerobic Respiration
34 ATP
No additional ATP
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Cellular Respiration