It might seem odd that we have an enzyme in our bodies that catalyzes a "reversible reaction"; one that goes either forward or backward, depending on the relative concentrations of reactants. What's the point of that? How is it that the enzyme is helpful to an organism in that case?

Question

It might seem odd that we have an enzyme in our bodies that catalyzes a "reversible reaction"; one that  goes either forward or backward, depending on the relative concentrations of reactants. What's the point of that? How is it that the enzyme is helpful to an organism in that case?

anonymous · Answer

@yayathatsme Think about the concentration bit.  Why would any cell care about the amount of something (concentration) in it?