E. Differentiate between the terms
1. Respiration and combustion

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Solution

Differentiate between respiration and combustion:
Respiration Combustion
(i) It is a biological process (i) It is not a biological process
(ii) It is a slow process (ii) It is a fast process
(iii) It takes place in the body in the presence of oxygen (iii) It takes place anywhere in the presence of oxygen
(iv) It is a spontaneous process (iv) It requires heat to start the reaction.
(v) During respiration, oxygen combines with glucose to give some heat energy, water vapour, and carbon dioxide (v) During combustion, a number of products may be formed. A large quantity of heat is produced.

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Respiration	Combustion
(i) It is a biological process	(i) It is not a biological process
(ii) It is a slow process	(ii) It is a fast process
(iii) It takes place in the body in the presence of oxygen	(iii) It takes place anywhere in the presence of oxygen
(iv) It is a spontaneous process	(iv) It requires heat to start the reaction.
(v) During respiration, oxygen combines with glucose to give some heat energy, water vapour, and carbon dioxide	(v) During combustion, a number of products may be formed. A large quantity of heat is produced.