Talk:Unicellular organism

Wiki Education Foundation-supported course assignment
This article is or was the subject of a Wiki Education Foundation-supported course assignment. Further details are available on the course page. Student editor(s): DavidpBowman. Peer reviewers: DavidpBowman.

Above undated message substituted from Template:Dashboard.wikiedu.org assignment by PrimeBOT (talk) 11:58, 17 January 2022 (UTC)

Untitled
Name three example of unicellular organisms.

Why are these examples called unicellular organisms?

Where can we find these examples?

Name three examples of unicellular plants. — Preceding unsigned comment added by 60.53.197.192 (talk) 05:56, 8 June 2011 (UTC)

Added a small part on multicellular organisms. I'm not sure if it's worth expanding on that more. Also, maybe there should be a part on size limitation with the surface area/volume ratio leading up to examples of large single-cells? (I forgot to add this before): I think another possible direction could be a short evolutionary history and to expand a little bit on what classifies something as a single celled organism. DavidpBowman (talk) 21:16, 26 October 2015 (UTC)

Sections
I added a section for evolutionary hypothesis and for the macroscopic organisms. I've been looking around for some additional sources as well, I think there could definitely be more. I'm not sure if it's relevant to talk about the other origin of life theories since thats in it's own page, but talking about the other theories could make things a little more balanced if anyone wanted to talk on that more. Also not all of the links for the references seem to be working, so that could use some fixing. DavidpBowman (talk) 22:36, 28 October 2015 (UTC)

I wanted to add sections giving an overview of the main groups of single-celled organisms. So I added bacteria, archaea, protozoa, algae, fungi, and small general blurbs on prokaryotes and eukaryotes. Plus some pictures to spruce it up. I'd appreciate it if anyone were to check over that, especially the algae and fungi sections-as I don't know a too much about those two. And the protozoa kingdoms, it's 7 now? I checked the article and I think? the phyla are right but I'm not 100% sure on this. DavidpBowman (talk) —Preceding undated comment added 07:12, 23 November 2015 (UTC)

Genetic event that may have helped "Unicellular organisms" become "Multicellular organisms" relevant - or not?
QUESTION: Is the following text/reference(s) (see blockquote below) regarding a possible genetic event that may have helped "Unicellular organisms" become "Multicellular organisms" relevant to the main article on "Unicellular organisms" - or not?

A seemingly relevant edit added to the main article, but later reverted by User:Adrian J. Hunter, was as follows:  Based on a recent added (but later reverted) edit as follows:

In January 2016, scientists reported that, about 800 million years ago, a minor genetic change in a single molecule, called GK-PID, may have allowed organisms to go from a single cell organism to one of many cells.

Should the text/reference above be included in the main article on "Unicellular organisms" - or not? - Comments Welcome - in any case - Enjoy! :) Drbogdan (talk) 01:19, 8 January 2016 (UTC)
 * My position is that the sentence is about the development of multicellularity, and therefore belongs at Multicellular organism rather than here. This is consistent with the current organisation of these articles, whereby the origin of cells themselves is (briefly) discussed at Unicellular organism, and the transitions from unicellular life to multicellular life are discussed at Multicellular_organism. Adrian J. Hunter(talk•contribs) 04:35, 8 January 2016 (UTC)

kingdom protozoa?
the wiki-article for protozoa covers more organisms than just kingdom protozoa. for example many members of SAR supergroup are heterotrophic and should be considered as "protozoa" or "protist" but Kingdom protozoa includes only unikonts & excludes all bikonts (or kingdom "Chromista"?) which also can be unicellular - but are neither plants, animals, fungi or algae - such as for example plasmodium virus that causes malaria J mareeswaran (talk) 13:13, 22 March 2016 (UTC)

I didn't even think to include examples of parasites like Plasmodia. Seems to be kind of a catch all. I could help with fleshing some of this out. I think it would probably be a good idea to mention some important exceptions from the SAR supergroup or others that may not fit exactly into the 7 kingdom scheme by Ruggiero et al. 2015. DavidpBowman (talk) 05:32, 25 March 2016 (UTC)

A unicellular organism, also known as a single-celled organism, is an organism that consists of a single cell, unlike a multicellular organism that consists of multiple cells. Organisms fall into two general categories: prokaryotic organisms and eukaryotic organisms. All prokaryotes are unicellular and are classified into bacteria and archaea. Many eukaryotes are multicellular, but some are unicellular such as protozoa, unicellular algae, and unicellular fungi. Unicellular organisms are thought to be the oldest form of life, with early protocells possibly emerging 3.8–4.0 billion years ago.[1][2] — Preceding unsigned comment added by 27.2.72.212 (talk) 12:49, 29 November 2022 (UTC)

Unicellular fungi are more than just yeasts
The article only mentions yeast as the sole representative of unicellular fungi, but if I recall correctly, Aphelidiomycota, Rozellomycota and Microsporidia are all unicellular fungi too. Yeasts are only multicellular fungi which reverted back to unicellularity. Am I correct here? If so I think these groups should be mentioned in the article. —Snoteleks (Talk) 16:46, 13 September 2023 (UTC)