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Aerobic respiration and key symbols

Bioenergetics • Respiration

Key concepts

What you'll likely be quizzed about

  • Aerobic respiration consists of controlled chemical reactions that release energy from glucose with oxygen.
  • It requires oxygen and produces carbon dioxide and water as byproducts, providing energy for cellular activities.
  • The primary site for aerobic respiration is the mitochondrion.

Flashcards

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What does the term ‘aerobic’ mean in biology?

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In the presence of oxygen; reactions that require oxygen are aerobic.

Key notes

Important points to keep in mind

Word equation: glucose + oxygen → carbon dioxide + water.

Balanced symbol: C6H12O6 + 6O2 → 6CO2 + 6H2O.

Glucose (C6H12O6) is the fuel; oxygen (O2) is the oxidiser; carbon dioxide (CO2) and water (H2O) are products.

Aerobic respiration occurs in mitochondria; more active cells have more mitochondria.

Respiration is exothermic: energy exits the system for cellular processes.

Oxygen and glucose supply limit respiration rate; gas exchange affects delivery.

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