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Every living organism has to “breathe” to survive. The process by which the living organisms use their food to get energy is called respiration. It is an oxidation reaction involving the degradation of food sequentially and the generation of energy. In respiration, glucose from the digestive system reacts with oxygen from the breathing system. As a result of this reaction, carbon dioxide and water are released as waste products exhaled, and energy is released as a useful product.
The respiratory system generates the route by which the oxygen in our environment enters the body, and the carbon dioxide produced is exhaled. The cell organelle in which respiration takes place is called Mitochondria. The energy released from the respiratory reaction is stored in the form of Adenosine triphosphate or ATP.
Definition: Respiration can be defined as the process used by the body to release energy from digested food (glucose).
When we respire, we take in oxygen, and we give out carbon dioxide. This process by which we continuously exchange the gases is called “breathing”. In the process of respiration, glucose is broken down into pyruvate. Let us have a look at what are the essential points we should keep a note of to know how the process of respiration takes place.
There are two types of respiration: Aerobic and Anaerobic. In the following section, let us see the characteristics of these two types of respiration.
Aerobic respiration takes place in the presence of oxygen. In this type of respiration, energy is released and as a part of the end result, water molecules are formed as well. In this type of respiration, pyruvic acid is converted into carbon dioxide.
Anaerobic respiration takes place in the absence of oxygen. In Anaerobic respiration, pyruvic acid is either converted into Ethyl alcohol or Lactic acid. Lactic Acid forms in some microbes as well as in the muscle cells. Ethyl Alcohol is formed as a result of anaerobic respiration in microbes such as bacteria or yeast.
We will take a look at the different characteristics of the two types of respiration:
| Aerobic Respiration | Anaerobic Respiration |
| Oxygen is required for Aerobic respiration | Oxygen is not required for Anaerobic respiration |
| It occurs in most of the cells. | It occurs mostly in the prokaryotes. |
| A high amount of energy is released (36 – 38 ATP molecules) | A lower amount of energy is released (36-2 ATP molecules) |
| Aerobic respiration passes through the stages of Glycolysis, Krebs Cycle, and Electron Transport Chain | Anaerobic respiration passes through the stages of Glycolysis, Krebs Cycle, and Electron Transport Chain |
| The end products of Aerobic respiration are Carbon Dioxide, water, and ATP | The end products of Anaerobic respiration are Carbon Dioxide, reduced species, and ATP |
| The reactants of Aerobic respiration are glucose and oxygen. | The reactants of Anaerobic respiration are glucose, and an electron acceptor (not oxygen). |
| Combustion is complete in Aerobic respiration | Combustion is incomplete in Anaerobic respiration |
| Cytoplasm and mitochondria are the sites of reactions for Aerobic respiration | Cytoplasm and mitochondria are the sites of reactions for Anaerobic respiration. |
| Aerobic respiration does not produce ethanol or lactic acid as a result of the reaction. | Ethanol or lactic acids are produced as a result of anaerobic respiration. |
We hope this article on Types of Respiration helps you. If you have any academic queries, do reach out to us. You can write us a mail at [email protected] or call 18002572961 (Toll-Free). We will be happy to help you.
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