However, Eq.( ) establishes that the real relationship between current and [𝑆] is: Equations highlight the critical role of the 𝑔(𝑖/𝑛𝐹𝐴) function. Therefore, it is the purpose of this work to investigate their full expressions in detail in the following. This will be performed for the above MM canonical mechanism (Scheme 1) as well as for a series of other important enzymatic mechanisms of general interest for their involvement in bioelectroanalytical sensors. Note also that although they will be derived for a cylindrical micro-or nanosensor, the following results are readily transposable to other types of electrodes leading to steady state or quasi-steady state diffusional regime using previously established equivalence relationships .