Can a cell function without water?

No, since in aqueous solutions there is an interaction of substances in the cell. The main content of the cell is the cytoplasm with organelles. The main substance of the cytoplasm is water. Many cytoplasmic substances: mineral salts, glucose, amino acids form a true solution, and proteins form a colloidal one. The cytoplasm is constantly moving, flowing inside a living cell, moving with it various substances, inclusions and organoids.
If the cell is deprived of water, then the cytoplasm will cease to exist, which will lead to cell death.

Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.