Water is essential to life itself; without water life on earth would
not exist. Water is a major component of cells, typically forming
between 70% and 95% of the mass of the cell. This means that we are
made from approximately 80% water by mass and some soft bodied
creatures such as jellyfish are made of up to 96% water.
Water also provides an environment for organisms to live in, 75% of
the earth is covered in water. The properties of water are essential
for organisms to live in for a variety of reasons. The one that is
most evident is its transparency. The fact that light can travel
through it allowed marine life millions of years ago to develop a more
sophisticated detection device other than sonar, sight. This is
evident with many types of fish using visual effects to deter
predators, like schools of fish in a large mass to make it seem as
though they are bigger than they actually are. Coupled with the fact
that light can travel through water, so can heat; which is essential
for aquatic plants to photosynthesise.
Water has a molecule of oxygen contained within it; this means that
aquatic
Organisms such as dogfish are able to extract that molecule for
respiration using a series of vascularized gills. Water is kept
flowing over these gills by a specialized pumping system. And it is
due to the density of water, in comparison to air, that prevents the
gills from collapsing on top of each other. This is shown when a fish
is taken out of water.
Water is a simple molecule made up of an oxygen atom and two hydrogen
atoms, H2O. The hydrogen and oxygen atoms are bonded covalently. The
two hydrogen atoms form a bond with t...
... middle of paper ...
...ension, allowing many organisms to support themselves and
move efficiently. It provides the perfect environment for chemical
reactions to take place, due to the fact that it is a universal
solvent. Water also has a very high heat capacity, allowing organisms
to maintain the appropriate body temperature, which is vital for their
survival. Finally, water has a unique structure, involving polarity
and hydrogen bonding. By considering these examples and the many
others that have also been discussed, it is clear to see how unique
and important the chemical and physical properties of water are to all
living organisms.
Bibliography-
www.bbc.co.uk
www.google.com
www.chem1.com
www.biology-online.org
www-hpcc.astro.washington.edu/scied/biology
www.clemson.edu/biolab/home.html
www.biolinks.com/
potato. To make it a fair test I will make sure that the tests will be
be as high as 80% in Erythrocytes, and as low as 18% in myelinated neurones.
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.
Water Relations in Two Plant Tissues Results: Table 5 Table to show the sucrose concentration and water potential of each tissue. The sucrose solution was extrapolated from graph 1, which shows the percentage change of mass of the tissues when immersed in the different sucrose solutions. A line of best fit was drawn, where the line of best fit intercepts the x-axis (concentration of sucrose solution) is the sucrose concentration of the tissue because at this point there is no mass loss of gain (read off of y-axis).
The Movement of Water and Solutes in Plants During the process of osmosis, water molecules move from an area that is hypotonic to an area that is hypertonic. A hypotonic area is one in which has less solute and a hypertonic area is one which has more solute. Plant cells, such as the ones in the epidermis and cortex regions of the roots of the plant, all have living contents, which are enclosed by a cell surface membrane and a thick, quite inelastic cellulose cell wall. The cell wall has special properties, which help the cells resist during the osmotic uptake of water. If a plant cell is placed in distilled water, it wonÂ’t swell up and burst like for example, a red blood cell, but it will take in water until the pressure that the wall exerts stops any further intake and expansion.
As we know every living thing needs water to survive .Water (H2O) is the most vital molecule in the cells, it 's made up of two hydrogen atoms and also consists an oxygen atom. Water makes up between 70 percent of the human body, this shows how much water is important to the living organisms. This is the only substance we always come across as a solid, liquid, and a gas, as the temperature increases the average kinetic energy of the molecules multiplies. According to “H.H Mitchell, journal of biological chemistry 158", the brain and heart are composed of 73% water”, this gives us an understanding of how vital water is to us (humans) and all living things. Without it we would not be able to survive and our bodies would not be able to work as
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.
The water is essential factor available on planet earth to make the life possible. The water cycle contains the largest chemical flux on earth (Robarts & Wetzel, 2000). The water is the eminent factor which dispenses heat around the globe by the process of the water cycle. The process of evaporation from the surface of the earth to the atmosphere condenses and falls as precipitation back on the earth surface is the simple process of the water cycle.
So how big are cells? Most human cells are about ten microns in diameter. This is about o...
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.