Question

how food is broken down by reaction with oxygen and heat is produced​

Answer 1

Answer:

Your body cells use the oxygen you breathe to get energy from the food you eat. This process is called cellular respiration. During cellular respiration the cell uses oxygen to break down sugar. ... As the wood burns, it combines with oxygen and releases heat energy and carbon dioxide.

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Answer 2

Answer:

• Food is a fuel for our body.
• During respiration,the digested food is broken down by the reaction with oxygen in the body cells to produce carbon dioxide,water and heat energy.
• This heat energy is utilised by our body.
• Respiration is a kind of slow combustion of food which take place in the body to produce heat energy.