Metabolism is the set of life-sustaining chemical reactions in the human body . To explain, the three main purposes of metabolism are:
- the conversion of food to energy to run cellular processes;
- the conversion of food/fuel to building blocks of macro nutrients, e.g. protein and carbohydrate; and
- the elimination of waste or excrement from the body.
As a result, these reactions allow the human body to grow and reproduce, maintain its structures, and respond to our environments.
To explain further, the word metabolism can also refer to all of these chemical reactions in aggregate, including digestion.
Not only this but it also includes the transport of substances including nutrients into and between different cells. This type is specifically called intermediary or intermediate.
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