Dictionary » U » Unicellular




(1) Having or consisting of only one cell.

(2) Pertaining to an organism whose functions are all carried out within one cell.


Examples of organisms that are unicellular are microorganisms such as bacteria and some algae such as diatoms.

Word origin: L ūni- comb. form of ūnus one + NL cellulāris, equiv. to cellul(a) live cell.
Related forms: unicellularity (noun)

Compare: multicellular

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Multicellular prokaryote

... chemistry rather than so adamantly require that it be forcefit into your session. Further complicating the general idea that prokaryotes are "unicellular" is the funtional difference of tissues in organization with other tissues of the same patient. You can see this in the cyanobacteria ...

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by shantis
Tue Sep 03, 2013 1:45 pm
Forum: Microbiology
Topic: Multicellular prokaryote
Replies: 24
Views: 17563

Cannot get this type of evolution process. Please Help ASAP!

Hi so for my lab assignment I am supposed to draw an evolutionary cycle or stage transition from intermediate stages from unicellularity to multicellularity in animals. I have to begin with a unicellular flagelllate, and end with a simple multicellular parazoan. I am actually confused. ...

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by xstandards
Thu Jul 11, 2013 4:33 am
Forum: General Discussion
Topic: Cannot get this type of evolution process. Please Help ASAP!
Replies: 1
Views: 704


... heritable body plan. That's perfect for ruling out prokaryotes and it is indeed met by all eukaryotes. Great definition! There are plenty of unicellular Eukaryotes. There are also multicullular Eukaryotes that don't have a defined shape. Triochoplax being the best example, it has some general ...

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by BlahBlahBlah
Thu Jun 27, 2013 1:46 pm
Forum: Microbiology
Topic: Multicellular prokaryote
Replies: 24
Views: 17563

Eukaryotic and Prokaryotic

... chromosomes. Most bacteria have cell wall made in majority by peptidogylcans. Eukaryotic organisms are divided into 4 kingdoms: the Protista (unicellular, both auto- and heterotrophic organisms; also multicellular algae are grouped in here), the plants, the fungi or mushrooms and the animals ...

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by SteveYst
Wed Oct 03, 2012 1:39 pm
Forum: Cell Biology
Topic: Eukaryotic and Prokaryotic
Replies: 4
Views: 10611

Parasites in water

This depends on what kind of parasites you have in mind. Is it bacteria, unicellular eukaryota or something multicellular? I'm not sure what you mean by the first question. Of course each person is affected by the parasite they've got. Thus if they were infected ...

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by JackBean
Mon Jun 18, 2012 9:16 am
Forum: Microbiology
Topic: Parasites in water
Replies: 5
Views: 3132
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