OCR 2010 A2 Biology Unit 2 - Control, Genome and Environment

TX22

Is Insulin A Primary Or Secondary Metabolite?

Well penicillin is secondary as far as insulin goes I honestly dont know because the only way its made is by genetic engineering which involves reverse-transcription :/ but maybe I am wrong there could well be other ways of making it.

Reply 803

I'm really hoping to knock out 2 modules today, pray for me. :colondollar:

Reply 804

TX22

for the genetic engineering of insulin, when you obtain the gene can it only be done by the MRNA route, or can it be done by cutting dna into fragements by restriction enzymes and then isolate the insulin gene by electrophoreiss.

Reply 805

uer23

15

We still have Mod 4 left. I'm dreading this exam. :frown:

Do you guys think I'd be able to finish it, and get enough revision exam practice in time for the exam ?

Reply 806

I Have No Imagination

uer23

We still have Mod 4 left. I'm dreading this exam. :frown:

Do you guys think I'd be able to finish it, and get enough revision exam practice in time for the exam ?

Yes.

Reply 807

Sakujo

I'm really hoping to knock out 2 modules today, pray for me. :colondollar:

Sure bro.!

Reply 808

TX22

for the genetic engineering of insulin, when you obtain the gene can it only be done by the MRNA route, or can it be done by cutting dna into fragements by restriction enzymes and then isolate the insulin gene by electrophoreiss.

I dont think the version of restrictive enzymes would suite it the best maybe because you would also be needing promoters? again isn't electrophoresis done for genome sequencing alone?

Reply 809

uer23

We still have Mod 4 left. I'm dreading this exam. :frown:

Do you guys think I'd be able to finish it, and get enough revision exam practice in time for the exam ?

Sure,why not!? :yep:

Reply 810

ibysaiyan

Sure bro.!

I did nothing. :sigh:

Reply 811

ViolinGirl

9

TX22

for the genetic engineering of insulin, when you obtain the gene can it only be done by the MRNA route, or can it be done by cutting dna into fragements by restriction enzymes and then isolate the insulin gene by electrophoreiss.

No, it can't be done using restriction enzymes. This is because the gene that codes for insulin is only around 200 nucleotides long, which is very small in comparison to the genome, so will be extremely difficult to locate its position.
The mRNA is can be located by using centrifugation methods to seperate it out from pancreatic tissue, and then reverse transcriptase is used to get a complementary DNA strand that can be used to synthesise the indulin gene.

Reply 812

Sakujo

I did nothing. :sigh:

but why

?

Reply 813

Arghhhhhh I am just losing it ! I have got over 40 tabs open with not even a slightest idea on what to do! <_<

.....

Reply 814

xXxBaby-BooxXx

19

Just counted it all up, I have 6 lessons worth of stuff to learn for this module and then I am done :biggrin:

I've had a fairly good day, caught up on some of my biology notes (I've been letting them slide recently) although I am dreading the actual start of revision (not that I generally do that much of it)

Also, I'm not sure if anyone's interested, but my school got my paper back

47 marks was worth 88 UMS

Which is weird, cause they also got my chemistry one back and the same amount of marks (47) was only worth 79 UMS. Shows how everyone must have really struggled with that biology one, since that's a 9 UMS difference....10% of the UMS marks!

Anyone, I shall quit this essay whilst I'm ahead :p:

and just say good luck to all of you here that are working so hard, and I really hope it pays off for us all in June!

Reply 815

xXxBaby-BooxXx

Just counted it all up, I have 6 lessons worth of stuff to learn for this module and then I am done :biggrin:

I've had a fairly good day, caught up on some of my biology notes (I've been letting them slide recently) although I am dreading the actual start of revision (not that I generally do that much of it)

Also, I'm not sure if anyone's interested, but my school got my paper back

47 marks was worth 88 UMS

Which is weird, cause they also got my chemistry one back and the same amount of marks (47) was only worth 79 UMS. Shows how everyone must have really struggled with that biology one, since that's a 9 UMS difference....10% of the UMS marks!

Anyone, I shall quit this essay whilst I'm ahead :p:

and just say good luck to all of you here that are working so hard, and I really hope it pays off for us all in June!

And same to you too =)
yes Hell We shall pulverize OCR. anyways I will be sticking around right till the "end".
Just wanted to share with you all this amazingly beautiful cgi clip... makes me wonder as to how characters such as Einstein, Hitler come to existence.

Reply 816

Remarqable M

OP

15

wow everyone is catching up! well done! i've been looking over module 4 but hopefully i can get this module done by this week and then i'll be focusing on my physics and maths.

Reply 817

Lac operon is DNA right?

Reply 818

Sakujo

Lac operon is DNA right?

Yes it is in DNA. Its the region consisting of the coding for the structural genes other regions along it are: Promoter,operator and regulator.
:smile:

Btw. we did muscle work today :woo:

lot to remember gonna post stuff about it later.

Reply 819