Question

differet between respiration and combustion?

Answer 1

Respiration is the process of oxidation of food materials like glucose, Amino acids, fatty acids to water and carbon dioxide. Respiration does not require any external heat to carry on the process. 
Combustion is only done by applying external heat to the sugar molecule to burn.

Answer 2

Hey there here is your answer
Respiration
1.Speed of reaction slow process .
2.Amount of energy quiet less than combustion.
3.Origin in living cell .
4.Production of flame is not produced .
Combustion
1.Speed of reaction Random ,Vigorous process.
2.Lot of amount of energy .
3.Origin any where outside the living cell .
4.Production of flame is produced .
Hope its help you .
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