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Cellular Respiration: From Glucose to ATP

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Table of contents

  1. Cellular Respiration Stages
  2. Cellular Respiration Requirements
  3. Cellular Respiration Equation

Structured notes

Cellular Respiration Stages

Cellular respiration is the process cells use to convert glucose into ATP.

  • It occurs in three main stages: glycolysis, the Krebs cycle, and oxidative phosphorylation.
  • Glycolysis takes place in the cytoplasm and breaks one molecule of glucose into two molecules of pyruvate.
  • Oxidative phosphorylation occurs on the inner mitochondrial membrane and consists of the electron transport chain and ATP synthase.
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Cellular Respiration StagesParagraph 1"Cellular respiration is the process cells use to convert glucose into ATP, the u…"
Glycolysis

Glycolysis takes place in the cytoplasm.

  • Glycolysis breaks one molecule of glucose into two molecules of pyruvate.
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Cellular Respiration StagesParagraph 1"Cellular respiration is the process cells use to convert glucose into ATP, the u…"
The Krebs Cycle

The Krebs cycle occurs in the mitochondrial matrix.

  • The Krebs cycle produces 3 NADH, 1 FADH2, 1 GTP, and 2 CO2 per turn.
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Cellular Respiration StagesParagraph 1"Cellular respiration is the process cells use to convert glucose into ATP, the u…"
Oxidative Phosphorylation

Oxidative phosphorylation occurs on the inner mitochondrial membrane.

  • Oxidative phosphorylation produces the bulk of ATP from one glucose.
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Cellular Respiration StagesParagraph 1"Cellular respiration is the process cells use to convert glucose into ATP, the u…"
Cellular Respiration Requirements

Aerobic respiration requires oxygen as the final electron acceptor.

  • Aerobic respiration produces approximately 30-32 ATP molecules.
  • Fermentation regenerates NAD+ so glycolysis can continue, but produces only 2 ATP per glucose.
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FermentationParagraph 5"Aerobic respiration requires oxygen as the final electron acceptor. Without oxyg…"
Cellular Respiration Equation

The overall equation for cellular respiration is C6H12O6 + 6O2 → 6CO2 + 6H2O + ~30-32 ATP.

  • The overall equation for cellular respiration is C6H12O6 + 6O2 → 6CO2 + 6H2O + ~30-32 ATP.
Source anchors
Cellular Respiration EquationParagraph 6"The overall equation for cellular respiration: C6H12O6 + 6O2 → 6CO2 + 6H2O + ~30…"

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Cellular Respiration: From Glucose to ATP | StudyGuideKit