Nucleolus

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

Moderators: Leonid, amiradm, BioTeam

Post Reply
User avatar
Adz795
Death Adder
Death Adder
Posts: 82
Joined: Fri May 06, 2011 9:16 am
Location: Mumbai, India
Contact:

Nucleolus

Post by Adz795 » Mon Sep 05, 2011 2:24 pm

Please tell me the significance of the nucleolus, besides the fact that it manufactures the ribosomal subunits.

-Why is it that the nucleolus appears very dark in transmission electron micrographs?
Does it have heterochromatin? Does it even have DNA?

Thanks.

User avatar
JackBean
Inland Taipan
Inland Taipan
Posts: 5694
Joined: Mon Sep 14, 2009 7:12 pm

Post by JackBean » Mon Sep 05, 2011 6:30 pm

I think it manufactures more kinds of RNA ;)
http://www.biolib.cz/en/main/

Cis or trans? That's what matters.

Talcen
Garter
Garter
Posts: 4
Joined: Mon Sep 05, 2011 9:15 pm

Post by Talcen » Mon Sep 05, 2011 9:30 pm

The nucleous functions as the synthesizer and assembler of rRNA. The nucleolus, just like the rest of the nucleus, contains DNA. The heterochromatin surrounds the nucleolus. I do not know why the nucleolus appears dark in TEMs. I hope this helps.

User avatar
greatmicrobiologist
Garter
Garter
Posts: 30
Joined: Thu Aug 25, 2011 7:28 am
Location: Vishakhapatnam, Andhra Pradesh, INDIA

Post by greatmicrobiologist » Wed Sep 07, 2011 7:29 am

Saumyadip Sarkar
Student of M.Sc. Microbiology,
GITAM Institute of Science,
GITAM University, AP, India

e-mail: [email protected]

Article Writer
http://www.microbioworld.com/

User avatar
Adz795
Death Adder
Death Adder
Posts: 82
Joined: Fri May 06, 2011 9:16 am
Location: Mumbai, India
Contact:

Post by Adz795 » Wed Sep 07, 2011 11:34 am

Thank you everybody!
Your help is much appreciated.

Talcen, are you sure the nucleolus assembles the ribosomal subunits? I think that is done in the cytoplasm.

User avatar
greatmicrobiologist
Garter
Garter
Posts: 30
Joined: Thu Aug 25, 2011 7:28 am
Location: Vishakhapatnam, Andhra Pradesh, INDIA

Re:

Post by greatmicrobiologist » Thu Sep 08, 2011 12:13 pm

Adz795 wrote:
Talcen, are you sure the nucleolus assembles the ribosomal subunits? I think that is done in the cytoplasm.



nucleolus does. .
Saumyadip Sarkar
Student of M.Sc. Microbiology,
GITAM Institute of Science,
GITAM University, AP, India

e-mail: [email protected]

Article Writer
http://www.microbioworld.com/

Post Reply

Who is online

Users browsing this forum: No registered users and 0 guests