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Respiration

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This section introduces respiration as a process for transferring energy from food (e.g. glucose) to the cells of an organism. Oxygen is normally required for respiration and carbon dioxide is produced as a waste product.

Respiration - take splace in plants and animals

Aerobic Respiration

• with oxygen
• Glucose + oxygen -> Carbon dioxude + Water + Energy
• C₆H₁₂O₆ + H₂O -> CO₂ + H₂0 + Energy

Anaerobic Respiraton

• without oxygen
• Glucose -> Energy + Lactic Acid (Instead of CO₂)
• Lactic Acid builds up in the muscles and makes them ache. Muscle cramps
• To get rid of lactic acid, aerobic respiration occurs
• Lactic acid + O₂ -> CO₂ + H₂0 + Energy
• Amount of oxygen required in the above is called oxygen debt

Differences Between Aerobic and Anaerobic Respiration

Aerobic	Anaerobic
Required Oxygen	No oxygen
No lactic acid	Lactic Acid produced
Large amount of energy	Leass energy released
Water and Carbon Dioxde produced	Lactic Acid and energy prduced. (No CO2 and H20)

Uses of Energy produced

• making muscles work
• growth and repair of cells
• maintaining body temperature
• transport of substances in the blood
• never impules
• plants use energy for photosynthesis

 

About the Author

by: Admin
Total views: 9484
Word Count: 543
Date: Sun, 21 May 2006 Time: 12:00 AM
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