Bacteria and Archaebacteria Quiz
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Archaebacteria are known to be the oldest living organisms on earth. They are classified as bacteria because they resemble bacteria when observed under a microscope. But they are completely distinct from prokaryotes. However, they share slightly.common characteristics with the ______

eukaryotes

Prokaryotic unicellular microorganisms that were the first forms of life to appear on.Earth, about 4 billion years ago Archaebacteria are known to be the oldest living organisms on earth. They are classified as ______ because they resemble bacteria when observed under a microscope

bacteria

These can easily survive under very harsh conditions such as the bottom of the sea and the volcanic vents.and are thus known as ______

extremophiles

Bacteria (bacterium) ______ unicellular microorganisms that were the first forms of life to appear on.Earth, about 4 billion years ago

<p>prokaryotic</p> Signup and view all the answers

Archaebacteria are known to be the oldest living organisms on earth. They are classified as bacteria because they resemble bacteria when observed under a microscope. But they are completely distinct from prokaryotes. However, they share slightly common characteristics with the ______

<p>eukaryotes</p> Signup and view all the answers

These can easily survive under very harsh conditions such as the bottom of the sea and the volcanic vents.and are thus known as ______

<p>extremophiles</p> Signup and view all the answers

Bacteria (bacterium) ______ unicellular microorganisms that were the first forms of life to appear on.Earth, about 4 billion years ago

<p>prokaryotic</p> Signup and view all the answers

Archaebacteria are known to be the oldest living organisms on earth. They are classified as bacteria because they resemble bacteria when observed under a microscope. But they are completely distinct from prokaryotes. However, they share slightly common characteristics with the

<p>eukaryotes</p> Signup and view all the answers

Prokaryotic unicellular microorganisms that were the first forms of life to appear on Earth, about 4 billion years ago Archae______ are known to be the oldest living organisms on earth. They are classified as

<p>bacteria</p> Signup and view all the answers

Bacteria (bacterium) prokaryotic unicellular microorganisms that were the first forms of life to appear on Earth, about 4 billion years ago Archae______ are known to be the oldest living organisms on earth. They are classified as

<p>bacteria</p> Signup and view all the answers

These can easily survive under very harsh conditions such as the bottom of the sea and the volcanic vents and are thus known as

<p>extremophiles</p> Signup and view all the answers

Bacterial cells are about one-tenth the size of eukaryotic cells and are typically 0.5–5.0 micrometers(µm) in length. However, a few species are visible to the naked eye, for example,

<p>Thiomargarita</p> Signup and view all the answers

Some bacteria may be even smaller.

<p>Mycoplasma</p> Signup and view all the answers

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