What type of chemical reaction is respiration ?

(a) Oxidation reaction

(b) Reduction reaction

(c) Combination reaction 

(d) decomposition reaction

Explanation: Respiration is an oxidation reaction. During respiration, glucose reacts with oxygen to produce carbon dioxide, water, and energy.

`C_6H_12O_6 + 6O_2 \to 6CO_2 + 6H_2O + \text (Energy)`

'Oxidation'  involves the loss of electrons and in respiration, glucose loses electrons and gets oxidized.

Correct answer -(a)