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It was single celled, and probably something similar to an algae. Algae are eukaryotes. Cyanobacteria (blue green "algae") are actually prokaryotes. Eukaryotes have been around some 1.5 to 2 billion years.

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How do you know that the first living thing did not require oxygen?

Scientists infer this by studying the evolution of life on Earth. The first living organisms likely evolved in an anaerobic (oxygen-free) environment, as oxygen levels were not initially present in significant amounts on Earth. These organisms would have been adapted to survive in environments without oxygen, and the need for oxygen likely evolved later as more complex organisms developed.


How might a scientist use cellular biology to classify organisms from simple to complex?

Scientists examine the creatures cell structure to see if it is prokaryotic or eukaryotic. Prokaryotic organisms are usually simple organisms and eukaryotic ones are complex. For example, humans are eukaryotic. Bacteria is prokaryotic.


What type of cell has nucleus?

both animal and plant cells have a nucleusboth animal and plant cells have a nucleusAnswer (improved)A nucleus can be found in eukaryotic cells. Prokaryotic cells lack nuclei. bacteria


Can a eukaryotic move on its own?

Yes, eukaryotic cells have structures like flagella or cilia that help them move. They can also undergo processes like amoeboid movement to change shape and move. Organisms made up of eukaryotic cells, like animals and fungi, are also capable of mobility.


How did oxygen first enter earths athmosphere?

Oxygen first entered Earth's atmosphere through the process of photosynthesis by early cyanobacteria and other photosynthetic organisms. These organisms produced oxygen as a byproduct of their metabolic processes, gradually increasing the amount of oxygen in the atmosphere over millions of years.

Related Questions

The first eukaryotic organisms on earth were?

The first eukaryotic organisms on earth were likely single-celled organisms such as protists, which are a diverse group of organisms that have a nucleus and other membrane-bound organelles. These organisms are thought to have evolved around 1.6-2.1 billion years ago.


Were the first organisms prokaryotic or eukaryotic?

Prokaryote


Are multicellular organisms prokaryotic or eukaryotic?

Multicellular organisms are eukaryotic.


Is a animal prokaryote?

Animals are not prokaryotes.They are eukaryotic organisms.


What is the difference between prokaryotic and eukaryotic organisms?

Eukaryotic cells have a nucleus and other membranebound organells, while prokaryotic cells don't


Are most unicellular organisms eukaryotic?

No most unicelluar organisms are not eukaryotic alot of them are prokaryotic


What is the primary characteristic on which the first division of organisms is made?

The primary characteristic used for the first division of organisms is whether they are prokaryotic or eukaryotic. Prokaryotic organisms lack a true nucleus and membrane-bound organelles, whereas eukaryotic organisms have a distinct nucleus and membrane-bound organelles within their cells.


What the first organism was?

The first organisms are believed to have been simple archaebacterias. It is believed that, due to it's ability to live in harsh conditions and the design that is much simpler than that of a eukaryotic cell, they were the first to inhabit the Earth.


Is paramecium is eukaryotic?

Paramesium is a protozoan.They are eukaryotic organisms


Are cheetahs eukaryotic?

Yes, cheetahs are eukaryotic organisms.


Is paramecium eukaryotic?

Paramesium is a protozoan.They are eukaryotic organisms


Are lobsters eukaryotic?

multicellular