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The biological importance of water.

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Introduction

The biological importance of water Water is the most important element in the world and is necessary for the existence of life on earth. Life began in water, many living organisms live in water and some organisms are made up almost entirely of water (E.g-Jellyfish-93% water). Water chemically has a basic structure of two hydrogen atoms and one oxygen atom (H�O). They are bonded together covalently, sharing electrons to form water. Water is made of particles, which have polarity but remain stable due to the hydrogen bonds they form; the bonds are formed because of the opposite charges between oxygen and hydrogen. All chemical reactions in organisms take place in water; it is used in hydrolysis to break up bonds (E.g.-The breakdown of proteins down to amino acids). ...read more.

Middle

Basic functions like body temperature, hearing and balance are key to our survival and they would not be possible without water. Thermal Properties of Water * High Boiling Point due to strength of Hydrogen bonds. * Water is good at absorbing heat. * Water will buffer high temperatures. * Water will insulate heat. Water is at its most dense at just above 4�C because as its temperature increases it begins to evaporate and the particles begin to spread out. Below 4�C hydrogen bonds form and the water begins to solidify into ice, e.g. colloid (solid suspended in a liquid). Water is commonly the base for secretions (E.g.-Digestive juices, tears, snake venom, etc). COLLOID = Water is a lubricant for many different parts of the human body and there are several different types of water lubricants: 1. ...read more.

Conclusion

Water supports the blood flow to the penis when it becomes erect; this is imperative for reproduction and shows how important water can be in life. Water is used in metabolic reactions to anabolic ally or catabolically alter cells. Anabolic reactions (building up of compounds in cells) using water require energy whereas catabolic reactions (breaking down of cell compounds) result in a release of energy. In conclusion water from a biological point of view is imperative to the survival of all living organisms on earth. I have expressed the significance of water in the human body and briefly in plants and it is clear that without water nothing could live. Water transports, supports, thermally regulates and is a living environment to some sea mammals. Water is so essential and important that a human being can supposedly survive on water alone for 44 days and 44 nights (David Blaine) without food!! Water is biologically vital on earth. ...read more.

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