Introduction
Respiration is the oxidative breakdown of organic substance (carbohydrate) inside the cell and form CO2 and energy.
Types of respiration
There are two types of respiration:
- Aerobic respiration : The respiration that takes place in presence of O2 is called Aerobic respiration.
C6H12O6 + 6O2 ——-> 6CO2 + 6 H2O + 686 kilo calorie energy.
- Anaerobic respiration : The respiration that takes place in absence of oxygen is called Anaerobic respiration. There is incomplete oxidation of food and form ethyl alcohol and CO2..
C6H12O6 ———–> 2 CO2 + C2H5OH (ethanol) + 50 k cal.
Difference between Aerobic and Anaerobic respiration
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Aerobic respiration |
Anaerobic respiration |
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1. It requires O2 for breaking the carbohydrate. |
1. It doesn’t require O2 for breaking the carbohydrates. |
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2. It occurs in all living cells. |
2. It occurs only in some bacteria, fungi, etc. |
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3. Food is completely oxidised to form inorganic substance. |
3. Food is incompletely oxidized to form organic and inorganic substance. |
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4. A large amount of energy i.e. 673 k . cal of energy is produced. |
4. A small amount of energy i.e. 28 K cal of energy is produced. |
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5. The end products of this process are CO2 and water. |
5. The end products of this process is CO2 and ethanol. |
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6. Reactions of glycolysis occur in cytoplasm and kreb’s cycle in mitochondria. |
6. All reactions occur in cytoplasm. Mitochondria are not needed in this process. |