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The Biological Importance of Water Hyung-woo (Shane) Cho, L6GW What are the physical and chemical properties of water that make it so unique and necessary for living things? When you look at water, taste and smell it - well, what could be more boring? Pure water is virtually colorless and has no taste or smell. But the hidden qualities of water make it a most interesting subject. Most people will see water and think that it is very ordinary, as we are able to find water everywhere. It is written as H2O in chemistry, tasteless, transparent, liquid in room temperature, and made of hydrogen and oxygen. Water usually forms between 70~95% of the mass of the cell, and 75% of the earth is covered with water. Even though it seems to be the simplest and ordinary thing on the earth, it is also the most important and remarkable substance around...

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