bacteria
moneran
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Bacteria, that's why it's called prokarotic (eukaryotic means that a cell does have a nucleus.) But most of it grows into larger organisms, becoming a multi-cellular organism.
one celled - or unicellular
one
A one celled organism is something you see in a microscope like a virus. A bald eagle is a many celled organism.
Unicellular best describes a one celled organism.
one singled celled organism is an amoeba. usally single celled organisms are surrounded by water
a one celled organism has only one job to do.....but a organism has many jobs to do a one celled organism has one job to do....but a multi-celled organism has many jobs to do.
A protitst is a one or many celled organism that lives in most surroundings.
All one celled organisims have an nucleus
By definition, a single celled organism consists of only one cell. If it were to have two or more cells we would call it a multi-cellular organism.