Glucose on reaching the cells reacts with oxygen to release energy. This process is called _____ .
A
breathing
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B
respiration
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C
circulation
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D
excretion
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Solution
The correct option is B respiration Digestion breaks down the complex form of food into the simpler form. These simpler forms of food are absorbed in the small intestine through villi and transported to cells of our body. On reaching the cells these simpler forms of food are utilised to generate energy. This process of generating energy is called respiration.