Human Beings Are Complex Organism 6agn

WHY HUMAN BEINGS ARE COMPLEX ORGANISM Human is a complex organism is because human are made up from trillon of cell and a lot of system and organ.Some of the major system are blood circulatory system,skeletal system,digestive system,nervous system and the respirotary system.Most of them are grouped into organ system that have speacialised function. The organisation in human body: Cell->Tissues->Organ->System->Organism An organism is any contigous living system,such as animal,plant and bacteria.All known types of organisms are capable of some degree of response to stimuli,reproduction,growth,development and hemeostasis.An organism consists of one or more cells,when it has one cell it is known as unicellular organism,when it has more then one cells it is known as multicellular organism.Most of unicellular organism are the size of microscopic and classified as microorganisms.humans are multicellular organisms composed of many trillions of cells grouped into specialized tissues and organs. An organism may be either a prokayote or a eukaryote.Prokaryotes are represented by two separate domains,the bacteria and archea.Eukaryotic organisms are characterized by the presence of a membrane-bound cell necleus and contain additional membrane-bound compartments called organelles (such s mitochondria in animals and plants and plastids in plants and algae,all generally considered to be derived from endosymboitic bacteria).Fungi,animals and plants are example of kingdoms of organisms within the eukaryotes.

The same type of cells which carry out a specific function are organised to form into tissues.For examples,a group of muscle cells form into a muscle tissues and a group of nerve cells form into nerve tissiue.they organised to work togther to perfome specific function.There approximately 200 types of cells in the human body.Red blood cells transport oxygen and glucose throughout the body while white blood cells destroy bacteria and germs. An organ is a group of tissue that cooperates to carry out specific life process.For examples,a group of muscle tissues,epithelial tissues and connective tissues form blood vessels.Several organs are organised into a system.Each system consist several organs which are organised to carry out life processes like repiration,reproduction and digestion Various systems in the human body are well organised to carry out all the life processes affectively.They are able to function because the cellular components work together to ensure the survival of human beings. The human brain is well developed to intergrate information’s and store memory.this allows human beings to have the ability to talk,think rationally,create new things,learn from the experiances and use languages.As a result,they think solve problems decide between right and wrong,invent new things and adapt themselves to their surroundings. Estimates on the number of Earth’s current species range from 10 million to 14 million,of which about 1.2 million have been documented and over 86% have not been described.More than 99% of all species,amounting to over five billion species,that ever lived on Earth are estimated to be extinct.