TRACING THE ORIGIN OF CELL: ANCIENT LIFE 2 - Cyanobacterias and Archaeans

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         ANCIENT LIFE 2: Cyanobacterias and Archaeans
As far as the evolution of cell in ancient life is concerned, there was an essential evolutionary breakthrough which was the evolution of a pigment system that could capture energy from sunlight and store it in a chemical bond. The organism that possess these pigment are commonly referred to as cyanobacteria ( chlorophyll synthesizing living organism) which is also a prokaryotes ( at one time, they are called blue- green algae) . Note that these are one of the first set of organisms to be discovered then.


Do you know?
Cyanobacterias are called blue-green algae because they are aquatic and photosynthetic, i.e. this organisms lives in water and can manufacture their own food. This organisms ( cyanobacteria) are quite small in size, which was because they are bacterias; bacteria which can be defined as tiny organism which could be seen with a light microscope. Cyanobacterias are said to be the oldest known fossil more than 3.5 billion years ago and also the largest and most important group of bacteria on Earth. 
Cyanobacteria which is a single - celled organism produces carbohydrates by a process of photosynthesis,and as a result of this they also produce oxygen as a waste product ( by-product) . It was recorded that another group of organisms were present at the same time with the cyanobacteria which was also a group of bacteria called Archaea ( Archaeans). 


Archaea belongs to the kingdom Eubacteria and also a representative of domain bacteria. Archaea bacteria has some distinct characteristics that makes them different from other species of bacteria, the characteristics are different cell membrane composition, different ribosomal structure,and different cell wall composition.
The Archaea have been estimated to have been in existence about 3 billion years ago. Then in the ancient life , Archaea are known to have an ability to multiply at the very high temperature that were present then, and their nutritional requirements reflect the composition of primitive Earth.


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