What are the properties of water that make it a key factor in understanding biochemistry?

Water is the ideal biological solvent.
Water is the medium in which chemical reactions take place and actively participates in many cases.
The polarity of the water molecule allows the appearance of hydrogen bonds between water molecules.
The large number of hydrogen bonds between water molecules explains many of the properties of water.
Water is liquid in a wide range of temperatures, indicating that heat is not only required for a change of state but also to break hydrogen bonds.
The high heat of vaporization of water is used by many organisms for the maintenance of body temperature.
Ice floats in water, making it an insulator and allowing aquatic life to continue.
Water acts as a solvent for polar molecules, mainly those with which it can form hydrogen bonds.
The high polarity of water also favors the cell because it forces non-polar substances to aggregate and remain together, contributing to the structure of membranes.
Water has a weak tendency to ionize, acting as a weak acid and a weak base.