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For the first 1.5 billion years, prokaryotes ruled the earth (and still do). It was not until about 2,100 million years ago that the first eukaryote evolved. It is hypothesised that the first eukaryote was a result of a larger prokaryote engulfing a smaller prokaryote (symbiosis) and they began to cohabitate together. The evidence for this is that mitochondrian and chlorophylls have their own DNA and are very similar to prokaryotic cells.
Wiki User
∙ 15y ago
Wiki User
∙ 10y agoIt is widely accepted that prokaryotes evolved before eukaryotes, due to a number of factors, of which the most simple is how complex eukaryotes are when compared to prokaryotes.
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What kinds of organisms live in Earth's most extreme environments and may provide scientists with clues about possible life forms on other planets?
organisms in the archaea kingdom Prokaryotes
Are bacteria and Viruses prokaryotes or eukaryotes?
Bacteria are prokaryotes, viruses are not classified within the six kingdoms of life, and so are neither prokaryotes nor eukaryotes.
Because prokaryotes do not have many specific structures they what?
Specific structures as in any membrane-bound organelles. These are not included in the prokaryotes.
The five kingdoms of life?
The 5 Kingdoms are: Fungi, Plants, Animals, Prokaryotes and Protoctistans.
What life forms were in the proterozoic eon?
There were no life forms as we know them during the Proterozoic period. With oxygen just then being accumulated in the earth's atmosphere, it brought the first advanced single-celled eukaryotes and multi-cellular life forms.
What was earth's first life forms?
bacteria is not right it is prokaryotes
What is the predominant life form on earth?
Prokaryotes.
Why does all life on earth depend upon metabolic diversity of prokaryotes?
Life on earth depend upon metabolic diversity of prokaryotes because Prokaryotic photosynthesis provides free oxygen in the atmosphere
For how long were prokaryotes the only kind of life on earth?
Prokaryotes were the only kind of life on earth approximately 2 billion years ago. They existed long before eukaryotes ever came into existence at all.
How many years were prokaryotes present on earth before the eukaryotes?
* 3.5 billion years ago the first life arose: prokaryotic bacteria * 1.5 billion years ago eukaryotic cells arose Therefore, prokaryotes were present on earth for 2 billion years prior to the emergence of eukaryotic life.
Prokaryotes were presented on earth how many more year before eukaryotes?
* 3.5 billion years ago the first life arose: prokaryotic bacteria * 1.5 billion years ago eukaryotic cells arose Therefore, prokaryotes were present on earth for 2 billion years prior to the emergence of eukaryotic life.
Why do scientists think that photosynthetic prokaryotes were not the first life forms on Earth?
Because They Are dumb and its very frustrating that no one can answer this question! sorry people who read this.
Life has existed on earth for how long?
Most scientists agree that life on Earth appeared 3.6 billion years ago. The first life forms on the planet were prokaryotes.
Where protist were the first prokaryotic organisms on Earth?
The oldest life fossils are very simple - prokaryotic no doubt and not that different from many of today's prokaryotic cell structure. Evolution in general seems to be an increase in complexity. Thus the first cells would logically be prokaryotic, or at least noneukaryotic. This is because prokaryotic cells are much simpler than prokaryotic cells which contain multiple membranous organelles to complicate their structure. Note that just because the oldest life fossils are prokaryotic does not prove that they preceeded the eukaryotes or that they were the VERY FIRST life on earth. Can there be simpler life than prokaryotes one wonders? However, no fossils have been found that are older than those 'first' prokaryotes, and as I have said it would be illogical for more complex eukaryotes to precede the simpler prokaryotes. The oldest fossils therefore (between 3.5 and 3.8 billion years old) are thus accepted as both the first life and prokaryotic.
What kinds of organisms live in Earth's most extreme environments and may provide scientists with clues about possible life forms on other planets?
organisms in the archaea kingdom Prokaryotes
Is life on Earth possible without bacteria?
no because bacteria helps digest our food and it also is one of the main decomposers.
Are prokaryotes unicellular?
Not all prokaryotes are unicellular. A few prokaryotes such as myxobacteria have multicellular stages in their life cycles.
