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Watch out! Bacteria can see like human beings
It has taken scientists over 300 years to finally figure out how bacteria \"see\" their world, and they do it in a remarkably similar way to us. The team of British and German researchers revealed how bacterial cells act as the equivalent of a microscopic eyeball or the world\'s oldest and smallest camera eye.
London: It has taken scientists over 300 years to finally figure out how bacteria "see" their world, and they do it in a remarkably similar way to us. The team of British and German researchers revealed how bacterial cells act as the equivalent of a microscopic eyeball or the world's oldest and smallest camera eye.
Cyanobacteria are found in huge numbers in water bodies or can form a slippery green film on rocks and pebbles. Synechocystis, the species used in the study is found naturally in freshwater lakes and rivers.
Cyanobacteria evolved around 2.7 billion years ago and the fact that they are able to produce oxygen and fix carbon dioxide using energy from the sun (photosynthesis) is thought to have caused mass extinctions and the oldest known ice age.
The current study reveals that they are able to do this because the cell body acts like a lens. As light hits the spherical surface, it refracts into a point on the other side of the cell. This triggers movement by the cell away from the focused spot.
