Question
Differentiate between Respiration and Combustion

Answer

RespirationCombustion
1It occurs inside living cellsIt is a noncellular process.
2Respiration is biochemical process.Combustion is physio-chemical process
3Most of the energy is trapped in ATP moleculesATP is not formed
4Oxidation occur at the end of reaction(terminal oxidation) between reduced coenzymes and oxygenThe substrate is directly oxidised in combustion
5Energy is released in stages as chemical bonds are broken in stepsEnergy is released in a single step as all chemical steps occurs simultaneously
6A number of intermediates are formed. They are used in the synthesis of different organic compoundsNo intermediates are produced in combustion
7A number of enzymes are required., one for each step or reaction.Burning is a non-enzymatic process
8Less than 50% energy is liberated in the form of heat energy. Light is rarely produced.Energy is libreated in the form of both light abd heat energy
9Temperature is not allowed to riseTemperature become very high

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