Respiration

9.1 Aerobic Respiration

• Equation:
  • Word: $\text{Glucose + Oxygen}\to \text{Carbon Dioxide + Water + Energy (ATP)}$
  • Chemical: ${\text{C}}_6{\text{H}}_{12}{\text{O}}_6+6{\text{O}}_2\to 6{\text{CO}}_2+6{\text{H}}_2\text{O}+\text{Energy}$
• Occurs in: Mitochondria.
• Energy Produced: 38 ATP molecules per glucose molecule.

9.2 Anaerobic Respiration

• Equation:
  • Word: $\text{Glucose}\to \text{Lactic Acid + Water + Energy (2 ATP)}$
  • Occurs when: Oxygen is insufficient (e.g., during intense exercise).
• Energy Produced: Small amount (2 ATP molecules).

9.3 Comparison of Aerobic and Anaerobic Respiration

Feature	Aerobic	Anaerobic
Oxygen Required	Yes	No
Products	CO₂, H₂O, Energy	Lactic Acid, Energy
Energy Produced	High (38 ATP)	Low (2 ATP)

9.4 Importance of Respiration

• Provides energy for growth, repair, and metabolism.