• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

The biological importance of water

Extracts from this document...

Introduction

The biological importance of water Water is an important part of life: Without it, life on earth would not exist. Water is a major component in cells, typically forming 70 to 95% of the cell's mass. In humans water is around 80% of our mass. Water also provides an environment for organisms to live in. One obvious example of water's biological importance is that 75% of the Earth is covered in water. Their use in all living things and it covers a huge variety of everyday functions which are important to the existence or operation of the organism. Humans are not the only ones who contain the valued material but other creatures like the jellyfish hold 96% of water as their body mass. Water is one of the most unusual compounds on Earth. It has a variety of properties not found in any other liquid. These properties are due to its molecular composition, which is simply just 2 hydrogen atoms and one oxygen atom, making up H2O. Water is a covalent compound. This means that water has covalent bonds, which are formed by sharing electrons in the outer orbits of the nuclei and proton. In the case of water however the large numbers of protons in the oxygen nucleus have a stronger attraction for these shared electrons than the relative tiny hydrogen nuclei. This pulls the electrons slightly closer to the oxygen nucleus and away from the hydrogen so that the oxygen develops a slight negative charge and the hydrogen's a slight positive charge. ...read more.

Middle

This allows herbaceous plants to remain upright. In conclusion, water has uses in all organisms ? from plants to animals and can offer a great many things from transport to support. This substance is absolutely essential to the existence of every living organism on this planet. Why life chose carbon 1. Carbon is one of the most widely used elements in the living world. 2. It is the second most abundant element in the human body- about 28% of the wet weight 3. One of the special feature for carbon is that carbon atom are able to bond with each other to form extended chain 4. They do this by sharing pairs of electrons with neighbouring carbon atom to form stable covalent carbon-carbon bonds 5. Carbon can also form branched ? chains and ring, these chain and ring structure provides the skeleton of organic molecules 6. Another special feature for carbon is that it can form a covalent bond with other atom then it self 7. Carbon gives these atoms specific chemical properties to the molecules that contain them 8. Carbon with four different atoms or group attached are said to be asymmetric or chiral 9. Amino acid is an example of a tetrahedral nature of the carbon atom 10. The outlines that Carbon provides are fundamental to the specific nature of biological molecules. It is essential that molecules in the cell fit together correctly (like coenzyme a catalyst ion cell ) History Labour party The Labour Party was created in 1900: a new party for a new century. ...read more.

Conclusion

4. She also became a familiar figure internationally, striking up a famous friendship with US President Reagan and gaining the praise of Soviet leader Gorbachev. Alec Douglas-Home: 1963-1964 1. He was in the conservative party 2. Only served as Prime Minister for 363 days but he oversaw the abolition of resale price maintenance and took a tough stance in dealing with the trade unions. 3. He served as Commonwealth Secretary during the Suez Crisis of 1956, in addition to holding the positions of Leader of the House of Lords and Lord President of the Council. 4. After Home?s father passed away, he became the 14th Earl of Home and took a seat in the House of Lords Anthony Eden:1955-1957 1. He was in the conservative party 2. He was elected to the House of Commons in 1923 and was appointed undersecretary of state for foreign affairs in 1931 3. He was minister for League of Nations in June 1935 4. In 1954 he helped to settle the Anglo-Iranian oil dispute, to resolve the quarrel between Italy and Yugoslavia over Trieste, to stop the Indochina War, and to establish the Southeast Asia Treaty Organization Edward Heath: 1970-1974 1. He was in the conservative party 2. Heath won the 1970 election, and served his only term as Prime Minister during a time of industrial upheaval and economic decline. 3. Heath also worked to create a lasting peace in Northern Ireland 4. Outside of politics he maintained lifelong passions for conducting and playing music as well as sailing, notably winning the Admiral?s Cup while Prime Minister ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our AS and A Level Energy, Respiration & the Environment section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related AS and A Level Energy, Respiration & the Environment essays

  1. Marked by a teacher

    Home Economics - Why is nutrition important to sports people?

    5 star(s)

    * Cheese * Milk * Cream * Eggs (high in protein - biological value of 100) o Meat (for protein and iron in red meats) o Bread (for complex carbohydrates) o Pasta (for complex carbohydrates) o Oats (for complex carbohydrates)

  2. Peer reviewed

    descrive the biological importance of water

    5 star(s)

    Substances that dissolve in water are known as hydrophilic substances. Ionic substances such as sodium chloride, NaCl, are made up of both positive and negative ions. Sodium chloride is held in it's structure by the strong attraction between it's positive sodium ions and negative chloride ions.

  1. Ecology of leaves

    This could have been due to insects or the handling of the leaves, as the leaves may have rot over the 24/48 hours taken to process the measurements. Further to this problem is the use of 1cm grid square to measure the surface area, this is not an accurate enough measurement of the leaves.

  2. Why the Body Needs Energy? Every living cell within the ...

    * There are approximately 8000per mm3 in a healthy body. * Increases rapidly by mitosis in case of serious infection. Granulocytes * Defends system against microorganisms an example of this would be viruses and bacteria. * Granulocytes form 75% of white blood cells * Attracted by toxins into the tissues and can pass threw the capillary walls.

  1. The Pancreas is a large gland that forms part of the Endocrine System, but ...

    One mutation is in a gene that encodes trypsin. This mutation leads to a "super trypsin" being made. This "super trypsin" can be activated too early and does not stop being activated. It probably becomes activated in the acinar cells. This will eventually destroy the cells and will lead to inflammation.

  2. formation, extraction and separation of the crude oil.

    We will work out which fuels should have released the most energy. Heptane Heptane + oxygen -->carbon dioxide + water C7H + 11O2 --> 7+CO2+8H2O 4� C-C 347= 2082 16� H-C 413= 6608 11� O=O 498= 5478 = 14168 7� 2 C=O 805= 11270 8� 2 H-O 464 = 7424

  1. The Importance of Being The Right Size.

    (Obviously the volume will vary much more.) Surface Area 6cm� 24cm� 54cm� Volume 1cm� 8cm� 27cm� SA : V 6 : 1 3 :1 2 : 1 In the table showing surface area : volume ratios, the surface area and volume increases as the linear dimension increases.

  2. Energy for Home Assignment.

    The main problem with solar-energy systems is that they require sunny weather to work. Only few regions can count on extended periods of clear skies. Places that have the right kind of weather (e.g. deserts) are generally far from population centers, meaning that this source of energy isn't suitable for

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work