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Q6.  Why is respiration considered as exothermic process?

Question

Q6.  Why is respiration considered as exothermic process?

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Solution

Respiration is considered an exothermic process because it releases energy in the form of heat. Here's a step-by-step explanation:

  1. Respiration is the process by which cells in plants and animals break down sugar and turn it into energy, which is then used to perform work at the cellular level.

  2. The process of respiration involves a series of metabolic reactions, which are all chemical reactions, and these reactions change the energy from one form to another.

  3. In the case of respiration, the energy stored in glucose is converted into ATP (adenosine triphosphate), the "energy currency" of cells. This process involves the breaking of chemical bonds in the glucose molecule, and the formation of new bonds in the ATP molecules.

  4. When the bonds in glucose are broken, energy is released. Some of this energy is used to make ATP, and some is released as heat. This is why respiration is considered an exothermic process.

  5. The overall reaction of cellular respiration is: C6H12O6 (glucose) + 6O2 -> 6CO2 + 6H2O + energy (as ATP and heat). The energy released (in the form of ATP and heat) is greater than the energy used to initiate the reaction, making it an exothermic process.

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