The Biological Importance Of Plants To Humans Essay
The plant can then use this carbon dioxide and the cycle is complete.
Photosynthesis is the process by which organisms convert light energy into chemical energy.
The Oxygen Cycle Oxygen is constantly being used and created by different processes on planet Earth.
It makes up about 65% of the mass of the human body. Oxygen also makes up about 30% of the Earth and 20% of the atmosphere.
Therefore, water is indispensable in metabolic reactions.
Besides acting as a reactant, water also provides an important environment for chemical reactions to take place.
The evaporation of sweat from skin surface absorbs a large amount of latent heat from our body, so cooling the body very efficiently.
Besides the high latent heat of vaporization, hydrogen bonding also gives a special characteristic to water that is a high specific heat capacity.
Water possesses unique properties, for instance, high specific heat capacity, solvent properties, high incidence of hydrogen bonding and low viscosity. These characteristics cause water to become biologically important to all living organisms.
Metabolism Water acts as a reactant in important chemical reactions.
For instance, in photosynthesis of plants, light energy from sun is absorbed by chlorophyll.
In plants, water helps transport nutrients into their bodies.
Water in the soil has some solutes dissolved in it, such as mineral ions (nitrate, phosphate, magnesium).