Water (Hydrogen Oxide - H2O), is a compound that is found everywhere
on the planet. It can occur as solid, liquid and gas. It forms as much
as 2/3 of the Earth's surface and is vital to all varieties of life.
Water has importance inside cells and externally. This may be because
it has interesting chemical and physical properties; it can be found
naturally in all three of its states. However its molecules are bonded
together by hydrogen bonds, this rises its melting and boiling points,
i.e. its boiling point would be -120ºC rather than 100ºC. Also because
it contains slightly negatively charged oxygen atoms and slightly
positively charged hydrogen atoms making it polar.
Water is called a universal solvent because of it polarity. This means
it can easily ionise substances, many compounds, whether ionic, polar
or covalent will dissolve in it, therefore more reactions take place
while in solution with water. Often in organisms substances must be in
solution and water is the solvent. For example plants can only obtain
mineral salts in solution and human digestion will only dissolve
soluble foods, meaning large starch molecules must be broken down into
soluble sugars. Also many organisms living in water spend most of
their time underwater, yet they require oxygen to respire, and as
water is such a good solvent that the required oxygen gas is dissolved
in the water.
Water is the most abundant component in any organism, the lowest is
20% in seeds, while jellyfish are 99% (hence the transparency). It
plays vital roles in the metabolism of all cells and in photosynthesis
(providing raw materials) in plant cells. In all cells water is used
for; hydrolysis, the breakdown of a substance by water, e.g.
polysaccharides to monosaccharides, it is also a medium for chemical
reactions, due to its properties as a solvent; the diffusion and
osmosis of substances, e.g. gaseous exchange, where there needs to be
moist lung wall linings as the exchange takes place in solution,
therefore there is water in the lungs or in.
potato. To make it a fair test I will make sure that the tests will be
The Functions of Osmosis Osmosis is the passive transport of water through a selectively permeable membrane, a membrane that allows certain needed particles to pass through it more easily than others. Pores in this type of membrane are large enough for water to pass effortlessly through it. The flow of water during osmosis depends on the concentration of a solute either within a cell membrane or surrounding the membrane. Water naturally flows from a hypertonic solution, an area of high concentration of solute, to a hypotonic district, a solution containing a lower concentration of solute.
How Water Is Related To Chemistry Water is a polar solvent, its molecule is covalently bonded that makes up for an unequal sharing of the electrons resulting in partially positive and partially negative water molecule. Organic molecules like Ethane and many other molecules are non-polar, that is they neither have a positive nor a negative end. As a result, he individual molecules within the water are greatly interconnected because of the presence of weak hydrogen bonds. Water acts as a universal solvent. All the living things are made up of entities, called atoms and molecules, and these entities are inside aqueous solutions that is the solutions containing elements dissolvable in water. Defining solutions, these are homogeneous mixtures of the molecules made up of two or more elements. Usually, the solvent is the substance, which is present in the solution in the largest amount, forming, most of the time a liquid. The substance that is in the lesser amount of the solvent is called solute. Disbanding of an ionically bonded compound, for instance sodium chloride or NaCl by means of water is the easiest process. Nevertheless, looking at their molecular makeup sets up the solubility of a lot of molecules. The biochemical foundation for this process is that the organic breaks up in to compounds called lipids that lack polar covalent bonding in certain regions. Fats are member of the lipids group. The polar water molecule that is covalently bonded behaves so as to keep out non-polar molecules that result in the clumping together of fats. Thus, the make up of a lot of molecules to a great extent affect their solubility. Water has a tendency to break down into H+ and OH- ions. During this disassociation process, the oxygen hold on to t...
How the Properties of Water are Related to Its Roles in Living Organisms and as a Living Environment for Living Organisms
my story starts on the atlantic ocean bouncing around the waves from the crest to the trough going up and down the wave height and wave length.
Water has a great number of roles in living organisms, this is largely to do with the structure and covalent bonding in a single water molecule, and between water molecules. Around 75% of the earth is covered in water, and it is reffered to as the most important Biochemical. Its chemical symbol is: H2O In a water molecule there are two bonding pairs and two non-bonding pairs of electrons. These four pairs of electrons repel one another, forming a tetrahedral pattern.
Once we have lost about 9-12% of our body weight in water, we have became severely Dehydrated and the result
Background Why is the sky blue? Why is the grass green? So many questions ponder through each individual's head. The main question of the experiment asked is "Why are plankton so small?" As a group, the main concept is that was explored was how the Nutrient Feeding of Phytoplankton leads to its size.
My eyes opened to a bright light. Is this what they say heaven is like? If it is I think I want to go back to Earth where I’m not being yelled at. My eyes slowly fluttered opened as I glared up into her bright green eyes. What the heck is going on and where am I? The last thing I remember is catching some waves off the beach of Lanikai on the island of Oahu. I was in Hawaii. Now where am I? Great question. I wish I knew.
Gravity collapsed the matter, forming the sun in the center of the nebula. As the sun came to be, the rest of the material began to clump up and small particles came together and became into bigger and better particles. Solar wind took light elements such as hydrogen and helium, and only left rocky materials such as earth. The solar winds led the rest of the materials to become into gas giants. This also led to asteroids, comets, planets, and moons to be created. Earths rocky core was made first with dense elements binded together. As dense material went to the middle, the lighter material was then made into the crust. Eventually, earths magnetic field was made and gravity took light elements. As Earth was evolving, earth was impacted by a large mass that made pieces of the planets mantle go into space. Gravity made it possible for these pieces to form the moon. The mantle under the crust caused plate tectonics and the movement of the large plates on the surface of earth. Such impacts and a lot of friction made mountains and volcanoes possible, which then began to throw gasses into the atmosphere. The planet was in a state where liquid water neither freezes nor evaporates but can remain as a liquid, the water remained at the surface, which was the key role in the development of life. According to a new theory, disk instability, clumps of dust and gas collided together early in life. Over
Water is always on the move. Rain falling where you live may have been water in the ocean just days before. And the water you see in a river or stream may have been snow on a high mountaintop.
As the sustenance for all humankind, animals, plants and other living organisms, Water is the greatest natural resources on this planet and it is becoming scarcer and more of a necessity. Water is a basic need and not a want in the same way that without air to breathe, cannot sustain life. Safe, clean water and good sanitation is a right. Therefore, the right to safe, clean water means the right to life. According to United Nations human rights are rights inherent to all human beings, whatever our nationality, place of residence, sex, ethnic origin, color, religion, language or any other status. Based on UN definition I am confident to assert that safe, clean drinking water and good sanitation is a basic human
The Biological Importance of Water as a Solvent and as a Medium for Living Organisms
I have decided to write about the water cycle, we have studied earlier. The obvious reason is because the water is the most important and essential material for the life on the Earth.
Water is an essential nutrient that our body requires every day. Without water human life cannot be sustained. Water deprivation kills faster than lack of any other nutrient. People do not think of water as a nutrient and don’t realize the important role of water in the body functions.