The bacteria are living unicellular and are prokaryotes. This means that its genetic material, a double-stranded circular DNA molecule, is free in the cytoplasm, not enclosed within a nucleus.
Given that microfossils and stromatolites (fossil colonies of bacteria mixed with minerals) have been found in sediments from various geological eras, and even in sedimentary rocks over 3.5 billion years old, bacteria are said to have existed from very remote times.
So much so that they have existed for a long period of Earth’s history when there were not even other life forms yet. In fact, the bacteria introduced very significant evolutionary events.
Today it is usually distinguished into two large groups:
The great evolutionary success of bacteria is largely attributed to their surprising metabolic versatility. It can be affirmed that all the possible mechanisms for obtaining matter and energy exist distributed among the various classes of bacteria.
How is car insurance different from car insurance? Hopefully, you will never have to about…
The Differences between History and Prehistory is given here. The terms history and prehistory mark…
The Differences between Hibernate and Suspend is given here. Suspend or hibernate a computer are…
The Differences between Language and Dialect is given here. The terms language and dialect are…
Justice and equity are two different terms and to understand what makes them different, we…
The Differences between Fact and Opinion is given here. A fact and an opinion are…