Water makes up approximately what proportion of the fresh mass of a typical living cell?

Explanation

Most cells are between seventy and ninety per cent water, which is why it is treated as the medium of life rather than as one nutrient among others. Every metabolic reaction occurs in aqueous solution, water is itself a reactant in hydrolysis and a product of condensation, and it transports dissolved substances. Seeds and spores are the low water exceptions, and their metabolism is correspondingly almost stopped.