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Question

Explain the three pathways of the breakdown of glucose?


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Solution

Glucose:

  1. For all living organisms, glucose is the most significant source of energy.
  2. Carbohydrates, the most essential of which is glucose, are broken down from the food we ingest.
  3. Glucose is metabolized to supply energy to the organism.
  4. Glucose is first turned into pyruvate in all organisms.
  5. A 6-carbon molecule is glucose, while a 3-carbon molecule is a pyruvate.
  6. This process occurs in the cytoplasm and is the same in all organisms.

The numerous ways in which glucose is broken down are as follows:

Aerobic respiration:

  1. In aerobic respiration, pyruvate is broken down in the presence of oxygen.
  2. Producing three molecules of carbon dioxide and water.
  3. The energy released during aerobic respiration is more than in anaerobic respiration.

Anaerobic Respiration:

  1. Anaerobic respiration occurs when there is no oxygen available.
  2. Pyruvate is transformed into ethanol and carbon dioxide in this process.

Lack Of Oxygen:

  1. Pyruvate is converted to lactic acid, a 3-carbon molecule complex.
  2. In our muscles when there is a lack of oxygen in our bodies, especially during severe exertion.
  3. Muscle cramps are caused by the production of lactic acid.

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