What is the difference between biochemical, pharmaceutical, and diagnostic chemical reactions in healthcare? What is a specific example that exists for each of these chemical reaction types above and...

What is the difference between biochemical, pharmaceutical, and diagnostic chemical reactions in healthcare?

What is a specific example that exists for each of these chemical reaction types above and why might it be of importance to healthcare professionals?

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It looks like NCChemist summarized the overall concepts pretty well regarding these types of reactions. In the medical field, you might look at these from a different perspective: where these reactions are happening and what their purpose is.

Biochemical reactions can be seen a few ways, but they would be the most general set of reactions you deal with in biology. They involve some sort of molecule being modified in some way to suit a biologic purpose. For example, you might see simple reactions, like the formation of a peptide bond, as above. You might also see many reactions pictured at once, as would be the case in a chemical cascade, such as glycolysis, involving many reactants and catalysts (enzymes). 

Pharmaceutical reactions is a subset of biochemical reactions, where we use some sort of exogenous--from outside of the body--chemical to change some aspect of a biochemical reaction. Many of these reactions are primarily to change enzyme catalysis rates or to trigger a chemical...

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