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7 Miscellaneous

In terms of evolution, bacteria are thought to be very old organisms, appearing about 3.7 billion years ago.

Two organelles, mitochondria and chloroplasts, are generally believed to have been derived from endosymbiotic bacteria.

Microorganisms are widely distributed and are most abundant where they have food, moisture, and the right temperature for their multiplication and growth. Bacteria can be carried by air currents from one place to another. The human body is home to billions of microorganisms; they can be found on skin surfaces, in the intestinal tract, in the mouth, nose, and other body openings. They are in the air one breathes, the water one drinks, and the food one eats.

8 See also

9 References

10 Further reading

11 External link


"Bacteria" is also the fictional name of a warring nation under Benzino Napaloni as dictator, in the 1940 film The Great Dictator.

Bacteriology Bacteria Prokaryotes Tree of life



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