Difference Between Respiration And Combustion:
Following are the points of difference between Respiration and Combustion or Burning.
Respiration | Combustion |
---|---|
It occurs inside cells i.e. intracellular process. | It is a non-cellular process. |
It is under biological control. | Combustion is an uncontrolled process. |
Respiration is a biochemical process. | Combustion is a Physico-chemical process. |
Energy is released in stages as chemical bonds are broken in steps. | Energy is released in a single step as all chemical steps occur simultaneously. |
Less than 50% of energy is liberated as heat. | Most of the energy is liberated as heat. |
Temperature does not rise due to liberation of heat in very small packets. | Temperature becomes very high. |
Light is not an accompaniment of respiration though certain organisms can produce light. | Light is emitted in combustion. |
About 50% of the energy is stored. | Energy is not stored. |
Energy is trapped in the form of ATP. | ATP is not formed. |
Oxygen is involved in terminal oxidation or oxidation of reduced coenzymes. | Oxygen is used in direct oxidation. |
A number of intermediates are formed. They are used in the synthesis of different organic compounds. | No intermediates are produced in combustion. |
A number of enzymes are required, one for each step or reaction. | Burning is a non-enzymatic process. |
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