The normal process of transcription requires:

Genetics as it applies to evolution, molecular biology, and medical aspects.

Moderators: honeev, Leonid, amiradm, BioTeam

Post Reply
element41skater
Garter
Garter
Posts: 6
Joined: Mon Sep 13, 2010 7:20 pm

The normal process of transcription requires:

Post by element41skater » Sat Apr 30, 2011 8:00 pm

The normal process of transcription requires:
a) an AUG start codon b) an ATG start codon
c) ribonucleoside triphosphates d) template RNA

I think D because Transcription makes a template RNA

Babybel56
Death Adder
Death Adder
Posts: 65
Joined: Mon Apr 18, 2011 11:35 am
Location: University of Cambridge, UK

Post by Babybel56 » Sun May 01, 2011 12:18 pm

I'd be inclined to agree with you :) a. and c. are needed for translation and ATG doesn't code for a start codong.

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

Post by JackBean » Sun May 01, 2011 12:48 pm

Babybel: are you sure? NTPs are required for translation?
http://www.biolib.cz/en/main/

Cis or trans? That's what matters.

Babybel56
Death Adder
Death Adder
Posts: 65
Joined: Mon Apr 18, 2011 11:35 am
Location: University of Cambridge, UK

Post by Babybel56 » Sun May 01, 2011 1:30 pm

They're a supply of energy for protein synthesis aren't they?

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

Post by JackBean » Sun May 01, 2011 2:09 pm

what doesn't? Let's ask the other way - transcription uses RNA as a template?
http://www.biolib.cz/en/main/

Cis or trans? That's what matters.

Babybel56
Death Adder
Death Adder
Posts: 65
Joined: Mon Apr 18, 2011 11:35 am
Location: University of Cambridge, UK

Post by Babybel56 » Sun May 01, 2011 2:17 pm

Transcription uses DNA as a template to create an antiparallel strand of RNA. Ah-ha. I misread the points. Okay dokey I would like to retract my answer and replace it with a complete reverse!

ATG codes for methionine (START codon) when part of DNA. So transcribing DNA into RNA would require it to be present. I'm going with b.

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

Post by JackBean » Sun May 01, 2011 4:55 pm

confess, you're doing it just to show the wrong answers, rigth? :lol:

Is the start codon required for transcription?
http://www.biolib.cz/en/main/

Cis or trans? That's what matters.

Babybel56
Death Adder
Death Adder
Posts: 65
Joined: Mon Apr 18, 2011 11:35 am
Location: University of Cambridge, UK

Post by Babybel56 » Sun May 01, 2011 6:12 pm

Clearly transcription isn't my strong point! You think it doesn't need a start codon?

Cat
King Cobra
King Cobra
Posts: 635
Joined: Thu Feb 14, 2008 7:40 pm

Post by Cat » Mon May 02, 2011 4:33 am

There are 3 major processes (let's do them on a short sequence):


Replication:

DNA-> DNA

aaaatgccctcctaacta (DNA template)-> ttttacgggaggattgat (DNA product)


Transcription:

DNA ->mRNA

ttttacgggaggattgat (DNA template) -> aaaaugcccuccuaacua (mRNA product)


Translation:

mRNA -> protein

aaaaugcccuccuaacua (mRNA template) -> Met-Pro-Ser (peptide product)

See if you can figure out the right answer by looking at the examples.

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

Post by JackBean » Wed May 04, 2011 1:18 pm

Babybel: no, the START codon is for translation ;) Transcription starts with promoter
http://www.biolib.cz/en/main/

Cis or trans? That's what matters.

Babybel56
Death Adder
Death Adder
Posts: 65
Joined: Mon Apr 18, 2011 11:35 am
Location: University of Cambridge, UK

Post by Babybel56 » Wed May 04, 2011 2:11 pm

Ah genetics the source of all that is unholy.

Post Reply

Who is online

Users browsing this forum: No registered users and 4 guests