Q4 of 20 Page 143

Give a scientific reason for the following.

Respiration is an exothermic reaction.

Exothermic reaction: A reaction in which heat is released when reactants change into products.


Respiration is considered as an exothermic reaction because:


i.In respiration, a large amount of heat energy is released when oxidation of glucose takes place.


ii.The glucose combines with the oxygen in the cells of our body and gives energy.



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