Question

Differtiate between respiration and combustion ​

Answer 1

Answer:

Any substance which can burn leads to combustion; while respiration uses glucose to give pyurvate and the to carbon dioxide. Combustion produces oxides in the form of smoke; in respiration there is no smoke formation. Product of combustion is heat energy; in respiration it is formation of ATP.

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Answer 2

Explanation:

Respiration Combustion

Respiration is a cellular process Combustion does not occur inside the living cell

Respiration is a controlled biological process Combustion is an uncontrolled process

Energy is released in a stepwise manner with different biochemical reactions Energy is released in a single step

Less than half of energy is liberated as heat Energy is released as heat. It can get hot enough to produce incandescent light.

Temperature is not allowed to rise and controlled otherwise it can damage the cell The temperature during combustion is very high.

Adenosine triphosphate is formed during this process. On breakage of the molecular bond, energy is released for physiological processes. Adenosine triphosphate is not formed.

Oxidation occurs at the end of the reaction between oxygen and reduced coenzymes in the electron transport chain Substrates are directly oxidised in the combustion process

Enzymes are required for the process of respiration Enzymes are not required for combustion as it is a non-cellular process

Example: Aerobic respiration Example: Combustion of oxygen and hydrogen into water vapour