HEAT Respiration does not require any external heat to carry on the process. Combustion is only done by applying external heat to the sugar molecule to burn. SUGAR In respiration, there is no charring of sugar occurs during oxidation of Sugar. In combustion, the sugar is melted, Chars and later burns to produce flame. ENERGY STAGES In respiration, energy is released in several stages throughout the process. In combustion, Energy is released only once. ENERGY The energy released from respiration is in the form of ATP and heat. The energy released from compassion is in the form of heat. INTERMEDIARIES Several intermediary products are formed during the process of respiration. No intermediary products are formed during the process of combustion. OTHERS Respiration is of two types aerobic respiration and anaerobic respiration. The combustion is also called as process of rapid oxidation.
⦿ Both respiration and combustion require oxygen and both produce energy.
⦿ Energy is released in the form of heat in both respiration and combustion.
⦿ Heat is required for both the respiration and combustion to carry on the process.