What limits cells to a small size?

Discussion of all aspects of cellular structure, physiology and communication.

Moderators: honeev, Leonid, amiradm, BioTeam

Post Reply
figmentofyourimagination
Garter
Garter
Posts: 2
Joined: Thu Dec 14, 2006 11:23 pm
Contact:

What limits cells to a small size?

Post by figmentofyourimagination » Thu Dec 14, 2006 11:50 pm

What does limit cells to a small size. Please explain because I really do not understand.

figmentofyourimagination
Garter
Garter
Posts: 2
Joined: Thu Dec 14, 2006 11:23 pm
Contact:

Post by figmentofyourimagination » Thu Dec 14, 2006 11:55 pm

Oh and if you could provide me with a link for a picture of cell surface area, that would be great.

Condraz23
Death Adder
Death Adder
Posts: 95
Joined: Sat Jul 15, 2006 2:53 am

Post by Condraz23 » Fri Dec 15, 2006 1:18 am

Increased surface area can also lead to biological problems. More contact with the environment through the surface of a cell increases loss of water and dissolved substances. High surface area to volume ratios also present problems of temperature control in unfavorable environments.

Ultrashogun
Coral
Coral
Posts: 149
Joined: Wed Jan 04, 2006 4:48 am

Post by Ultrashogun » Fri Dec 29, 2006 5:11 pm

Its the fact that volume grows cubicly while area only grows squarly, so the area which absorbs nutrients would become too small to supply the overproportional volume.

chenwithasterisk
Death Adder
Death Adder
Posts: 59
Joined: Sat Dec 30, 2006 10:14 am

Post by chenwithasterisk » Tue Jan 02, 2007 5:20 am

thk in this way,

if a cell grows, the volume would certainly gets bigger and bigger. this means the central nuclus would be further away from the outside environment.however, nuclus is resonsible for controlling all cell processes. it means it takes longer time or the material have to travel further to get to the nuclues,this makes all cell processes less efficient.therefor,cells need to divide to maintain a high surface area against volume
cheers

Baiji
Garter
Garter
Posts: 32
Joined: Fri Dec 22, 2006 5:57 am

Post by Baiji » Tue Jan 02, 2007 6:58 am

If a cell was the size of a dog (or something like that that) the living thing would be the size of the US, and the nucleus would have trouble sending out messages and waste/food from entering and escaping.

User avatar
sachin
King Cobra
King Cobra
Posts: 1517
Joined: Mon Jan 30, 2006 12:39 pm
Location: MUMBAI / INDIA
Contact:

Post by sachin » Tue Jan 02, 2007 4:18 pm

Its internal functions that limit it...........

Molecular activities do not require big size of cell; so enough size is used...

See:
http://staff.jccc.net/pdecell/cells/cellsize.html

It will explain best........
Senior Education Officer, BNHS, India. www.bnhs.org

Bitter Truth!
Who says reason for world war III will be Petrol?
Reason lies in two words "Me and Mine".

Post Reply

Who is online

Users browsing this forum: No registered users and 8 guests