Question
Why is respiration considered an exothermic reaction? Explain.

Answer

Respiration is considered as an exothermic reaction because in respiration oxidation of glucose takes place which produces large amount of heat energy.
$C _6 H _{12} O _6( aq )+6 O _2(g) \rightarrow 6 CO _2(g)+6 H _2 O ( l )+$ Energy

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