Question

Respiration differs from the process of combustion in the fact that

• A. All energy stored in glucose is released at once due to combustion.
• B. All energy stored in glucose is gradually released due to combustion.
• C. Comparatively large quantity of energy is produced due to combustion.
• D. The carbohydrate act as the combustion substance.

Answer 1

The correct option is A All energy stored in glucose is released at once due to combustion.

During respiration, there is no charring of sugar takes place. During combustion, there is charring of sugar takes place. All energy stored in glucose is gradually released at different stages due to respiration. All energy stored in glucose is released at once due to combustion. In respiration, the energy is released in the form of ATP and heat. In combustion, the energy is released in the form of heat.

Thus, the correct answer is 'All energy stored in glucose is released at once due to combustion..'