Biochemistry is any process that can be related to chemical reactions and living things.
For example, The human body and muscles.
Biochemistry studies how certain molecules will react to the energy molecule: ATP to make the muscle contract and produce movement.
Another example can be of how we can maintain things alive such as bacteria, archae and even animals. With biochemistry we can "measure" their homeostasis capacity like pH, climate or nutrients to make sufficient enough to live.
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Answer:
Biochemistry is any process that can be related to chemical reactions and living things.
For example, The human body and muscles.
Biochemistry studies how certain molecules will react to the energy molecule: ATP to make the muscle contract and produce movement.
Another example can be of how we can maintain things alive such as bacteria, archae and even animals. With biochemistry we can "measure" their homeostasis capacity like pH, climate or nutrients to make sufficient enough to live.