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Most likely they were one celled and very small, had no organelles like a nucleus or mitochondrion or ribosome. They would have DNA but it would be in collected area. Bacteria-like is what many people have said.
Wiki User
∙ 7y ago
Wiki User
∙ 7y agoBacteria
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What type of organisms first appeared on earth?
Earth's first organisms were the Single- Celled organismsBacteriaFungiAnd Protozoa
Which types of organisms developed first due to the early environmental condition on earth?
spongesThey were prokaryotic and anaerobic organisms developed first due to the early environmental condition on earth.
What was the first species to appear on earth?
The early bacterias. Hominids
When did the first life appear on earth?
in the beginning when God created it
Which organisms have produced the oldest fossil evidence?
Cyanobacteria are the first to appear in the fossil record.
What organisms are thought to have been the first to appear on earth?
bacteria
When did the first colonial organisms appear on earth?
1.4 billion years ago
Was oxygen on Earth before or after life on Earth?
Elemental oxygen did not appear on Earth until some time after life did. In fact, the oxygen was produced by life carrying out photosynthesis. The first organisms on Earth were anaerobic, meaning their life processes did not involve oxygen. To most organisms like this, oxygen was highly toxic.
What organisms appeared first in earths history?
The first organisms on Earth were likely simple single-celled prokaryotes, such as bacteria and archaea, that appeared around 3.5 billion years ago. These early organisms were anaerobic, meaning they did not require oxygen to survive. These primitive life forms eventually evolved into more complex organisms over millions of years.
What type of organisms first appeared on earth?
Earth's first organisms were the Single- Celled organismsBacteriaFungiAnd Protozoa
What were likely the first organisms on earth?
Bacteria.
The first eukaryotic organisms on earth were?
Protists
In what Era did the first land dwelling organisms appear?
the paleozoic era
When did the first multicellular organism appear?
Multicellular organisms first appeared during the Vendian period.
Where did Arthropods first appear on earth?
yes
What type of organisms were the first living organisms on Earth?
blue green algae archebacteria
What were most likely the first organisms on earth?
Bacteria.
