Chapter 12) Respiration

Respiration

Chemical reactions in cells that release energy from glucose

Aerobic respiration

Respiration using oxygen to release energy

Anaerobic respiration

Respiration without oxygen, releasing less energy

Glucose

Sugar used as fuel in respiration

Oxygen

Gas used in aerobic respiration

Carbon dioxide

Waste gas produced in respiration

Water

Product of aerobic respiration

Energy

Released during respiration for cell activities

Mitochondria

Site of respiration in cells

Lactic acid

Product of anaerobic respiration in humans

Oxygen debt

Extra oxygen needed to remove lactic acid

Fermentation

Anaerobic respiration in yeast

Ethanol

Alcohol produced during fermentation

Equation for Anaerobic respiration (humans)

Glucose → lactic acid (+ energy)
C₆H₁₂O₆ → 2C₃H₆O₃ (+ energy)

Equation for Anaerobic respiration (yeast)

Glucose → ethanol + carbon dioxide (+ energy)
C₆H₁₂O₆ → 2C₂H₅OH + 2CO₂ (+ energy)

Equation for Aerobic respiration

Glucose + oxygen → carbon dioxide + water (+ energy)
C₆H₁₂O₆ + 6O₂ → 6CO₂ + 6H₂O (+ energy)