What are different way in which glucose is oxidised to produce energy in various organisms?
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- Glucose is the vital energy source for all the organisms.
- The nutrition consumed is converted into carbohydrates in which glucose is the key ingredient.
- The glucose is oxidized to provide energy to the organism.
- We know glucose is a huge molecule and breaks down into different smaller units.
- At first glucose which contains 6 carbon molecules is broken in the cytoplasm of cells of all organisms.
- In this process we obtain a 3 carbon molecule compound called pyruvate.
- Further break down of pyruvate takes place in different manners in different organisms.
- Following are the different ways in which the breakdown of glucose takes place
- Anaerobic Respiration:
- The anaerobic respiration process takes place in the absence of oxygen.
- For example: In yeast during fermentation. In this process the pyruvate is converted into ethanol and carbon dioxide.
- Aerobic Respiration:
- In aerobic respiration, breakdown of pyruvate takes place in the presence of oxygen to give rise to 3 molecules of carbon dioxide and water.
- The release of energy in aerobic respiration is much more than anaerobic respiration.
- Lack of Oxygen:
- At times when there is a lack of oxygen in our body, mainly during vigorous activity, in our muscles, pyruvate is converted into lactic acid which is a 3 carbon molecule compound.
- The formation of lactic acid in muscles causes cramp.
Explanation:
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