In the human body, a series of chemical reactions results in the making of energy that is used at both the cellular and organismal levels. In which course would a person most likely study these chemical reactions?

Biochemistry studies the chemical substances and reactions in living organisms. The question is about energy-producing reactions in the human body, so biochemistry is the best fit. Geochemistry focuses on Earth's chemical processes, materials chemistry on the chemistry of materials, and physical chemistry on the physical principles underlying chemical systems.

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