Difference between cells

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

Moderators: honeev, Leonid, amiradm, BioTeam

Post Reply
rachel17
Garter
Garter
Posts: 1
Joined: Sun Oct 02, 2011 9:50 am

Difference between cells

Post by rachel17 » Sun Oct 02, 2011 9:56 am

Hello there, I'm on my first year to become a vet and we last friday we got a homework where we have to answer the following question:
- What is the difference between a prokaryotic cell and a eukaryotic in terms of genetic expression?Do you have any suggestions? i'm pretty confused about the ''genetic expression'' part.
Thank you so much!! :wink:

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

Post by JackBean » Sun Oct 02, 2011 10:38 am

the "genetic expression" part means, that you won't list, that eukaryota have mitochondria, while prokaryota do not (hint, existence of other organelles has influence). So, you will focus on differences between the gene expression in prokaryota and eukaryota (what are the ribosomes like, how are genes organised, etc.) and I would bet, that it will lead to different classes of antibiotics ;)
http://www.biolib.cz/en/main/

Cis or trans? That's what matters.

aptitude
Coral
Coral
Posts: 115
Joined: Sat Sep 10, 2011 12:58 am

Post by aptitude » Mon Oct 10, 2011 4:10 am

No, gene expression means that in prokaryotes, transcription is mostly regulated by the operon model, whereas in eukaryotes mostly by specific transcription factors. Also, prokaryotic mRNA is polycistronic (has multiple genes), and eukaryotic mRNA is not.

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

Post by JackBean » Mon Oct 10, 2011 6:11 am

You said in both sentences the same thing. But the gene expression covers more than just operons.
http://www.biolib.cz/en/main/

Cis or trans? That's what matters.

cryocell
Garter
Garter
Posts: 8
Joined: Mon Mar 07, 2011 1:41 pm
Location: US, Florida

Re: Difference between cells

Post by cryocell » Mon Oct 10, 2011 8:29 am

Great points altogether, personally I’m gonna have to bookmark this and come back to it. I’m curious if you have any follow ups to this post?

Post Reply

Who is online

Users browsing this forum: Bing [Bot] and 6 guests