Question

why is water a perfect medium for a biochemical reaction?

Answer 1

Water helps to buffer temperature changes because of its relatively high specific heat capacity.

Answer 2

Water is a very important element found in the Earth’s surface which makes up to 60% to 90% of all living things and is very important for cells.

The water acts as a solvent for chemical reactions which also helps transport dissolved compounds into and out of cells. Water has the highest dielectric  constant and form weak interactions with weak ’n’ number of biomolecule.