Clarify the role of essential mineral elements (Role of Macro and Micro-nutrients).

(N/A) Essential mineral elements play diverse roles in plant metabolism,which include:
$\Rightarrow$ Maintaining the permeability of the cell membrane.
$\Rightarrow$ Regulating the osmotic concentration of the cell sap.
$\Rightarrow$ Functioning as components of electron transport systems.
$\Rightarrow$ Acting as buffers to maintain cellular $pH$.
$\Rightarrow$ Serving as cofactors or activators for enzymatic activity.
$\Rightarrow$ Acting as major structural constituents of biological macromolecules (like proteins,nucleic acids) and co-enzymes.