Login

Join for Free!
116997 members


Ribossome production paradox?

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

Moderator: BioTeam

Ribossome production paradox?

Postby Rutibrom » Thu Jul 05, 2012 12:00 am

It is said that the cell nucleolus controls the production of rRNA, that is, it produces ribossomes. The DNA lingers in the nucleolus attached to proteins from where it begins the rRNA production process. But it is also said that the ribossomes are responsible for the synthesis of proteins when they reach the citoplasm, that is their function. How can it be then that the process to produce ribossomes requires proteins that are only synthesised by the ribossomes themselves? Does this not generate a paradox?
Rutibrom
Garter
Garter
 
Posts: 2
Joined: Wed Jul 04, 2012 11:56 pm

Postby JackBean » Thu Jul 05, 2012 9:17 am

because every cell comes from other cell and is provided with proteins already
http://www.biolib.cz/en/main/

Cis or trans? That's what matters.
User avatar
JackBean
Inland Taipan
Inland Taipan
 
Posts: 5667
Joined: Mon Sep 14, 2009 7:12 pm

Re: Ribossome production paradox?

Postby Rutibrom » Thu Jul 05, 2012 8:18 pm

Ok. That explains why every cell besides the original cell (or cells) are able to begin producing ribossomes. But is it explained how the process occurs with the original cell(s)? Was it by spontaneous formation?
Rutibrom
Garter
Garter
 
Posts: 2
Joined: Wed Jul 04, 2012 11:56 pm


Postby JackBean » Thu Jul 05, 2012 10:22 pm

There are several theories of origin of life and formation of cells. Just do not think that the ribosomes were there all the same for since they occurred. The proteins were probably added just later during evolution.
http://www.biolib.cz/en/main/

Cis or trans? That's what matters.
User avatar
JackBean
Inland Taipan
Inland Taipan
 
Posts: 5667
Joined: Mon Sep 14, 2009 7:12 pm


Return to Cell Biology

Who is online

Users browsing this forum: No registered users and 1 guest

cron