Talk:Cell wall

From Wikipedia, the free encyclopedia

	MCB Portal This article is within the scope of the Molecular and Cellular Biology WikiProject. Please work to improve this article, or visit our project page to find other ways of helping. Thanks!
Start	This article has been rated as Start-Class on the assessment scale.
Top	This article is on a subject of Top-importance within molecular and cellular biology.
Article Grading: The article has been rated for quality and/or importance but has no comments yet. If appropriate, please review the article and then leave comments here to identify the strengths and weaknesses of the article and what work it will need.

Cell walls hold everything in place. If an organism doesn't have a cell wall, it will have a splat look. Without a cell wall everything would be floating around. you need a picture of a cell wall

[edit] Could we get

A note about turgidity, flaccidity and overinflation within a cell wall? 66.75.246.149 04:17, 22 September 2005 (UTC)

a cell wall is fully permeable

[edit] What's the story...

...with the image link? Clicking on this link starts the file upload dialogue. Is this a temporary thing? --RunningFree 21:28, 25 October 2005 (UTC)

It works fine now. Supergrunch 18:15, 7 March 2006 (UTC)

[edit] Ah, about the Fungal Cell Wall section...

http://www.biologie.uni-hamburg.de/b-online/e33/33.htm says that "Constitute oomycetes a missing link or a group that cannot be counted among fungi at all? Oomycetes contain - in contrast to all other fungi – cell walls out of cellulose, their zoospores have two heterokont flagellae, and their thallus resembles that of some siphonal algae (Vaucheria, for example)." (Boldface added by me)and "Both plant and fungal cells are enclosed by a cell wall while animal cells have no such characteristic. This is true, and cell walls exist in prokaryotes (bacteria, blue-green algae), too. The walls of all three mentioned kingdoms have, nevertheless, different molecular compositions (they contain different molecular classes), their biosynthetic pathways and the way of their cellular growths are different. They are therefore not homologous.".

• However, http://www.iscid.org/encyclopedia/Cell_Wall, says "Fungal cell walls are similar to plant cell walls in that they contain cellulose, but they also contain glucosamine and chitin, both common supplements in herbal remedies for arthritis.", so DO they actually contain cellouse?!
• Then, http://www.botany.hawaii.edu/faculty/wong/BOT135/Lect03_b.htm says, "The mycelium or yeast cell is surrounded by a cell wall that is typically composed of chitin, the same material that makes up an insect's exoskeleton. However, one group of fungi that we will be studying has cell wall composed of cellulose, which is is the same material that is found in plant cells [...] However, those "fungi" with cellulose cell walls are no longer believed to be closely related to the fungi and have even been classified in a kingdom of their own." (Boldface added by me), so I guess they DON'T count as fungi?
• Also, http://vilenski.org/science/safari/cellstructure/cellwall.html says "Note: fungal cell walls contain chitin instead of cellulose." Seems to me that fungi DON'T have cellouse cell walls.

Summary: Fungi DO NOT have cellulose walls. There are "fungi" with cellulose cell walls, but they are not actually fungi. Therefore, I'm going to try to change the paragraph... 169.229.121.94 00:37, 8 December 2006 (UTC)