Chapter 9 - Cellular Respiration

Cellular Respiration

• C6H12O6 + 6 O2 → 6 CO2 + 6 H2O + ATP
• Aerobic: requires oxygen
• Exergonic: gives off ATP (32 total per glucose molecule)
• 4 main steps:
  • Glycolysis - energy investment
  • Transition reaction
  • Citric acid cycle (Kreb’s cycle)
  • Electron transport chain

Fermentation

• Anaerobic
• Only get energy from substrate-level P during glycolysis (2 ATP)
• 2 different paths:
  • Alcohol
  • Lactic acid