F215 - Revision thread 13th June 2011

Thanks. I found it in the end. Couldn't find it because it was hidden behind about 5 spoilers! Did you post it before?

In the chain termination method could you get a strand in which no modified nucleotide is added?

E.g.

Say the sequence was: A G C A T G T C T A

and the primer would bind to 1st three so the primer would be T C G and the modified nucleotide was A*

then you would have the following complementary sequences:

T C G T A*
T C G T A C A*
T C G T A C A G A*
T C G T A C A G A T <-------------- would you still get this one?

What do you guys think the perfect descriptions for these terms would be?

Sucession
Climax Community
Also, how can you distinguish between conservation and preservation?

thanks x

How much revision is everybody doing each day?
And how much have you got through so far, iv still got the whole of biotechnology(module 2 in heinemann book)!!
Can i get this done by Saturday??

The perfect definition of succession would have to be the one OCR use:
- Succession is the directional change in a community of organisms over time.

Again, from the OCR book:
- The climax community can be the name given to the final, most stable community reached.

I think conservation and preservation has been done before on this thread. However, conservation is also in the OCR glossary, so definitely learn that:
- Conservation is the maintenance of biodiversity, including diversity within species, genetic diversity within species and maintenance of a variety of habitats and ecosystems

Preservation is when the area is kept exactly as it is (as opposed to active management which is conservation). So there's no interference from the outside.

How much revision is everybody doing each day?
And how much have you got through so far, iv still got the whole of biotechnology(module 2 in heinemann book)!!
Can i get this done by Saturday??

I'm just about managing 7/8 hours a day and almost finished with this Unit, just need to patch up a few of the spec points. I think it took me a full day to revise Biotechnology properly. Start early tomorrow and you should have it done by the end of the day?

How much revision is everybody doing each day?
And how much have you got through so far, iv still got the whole of biotechnology(module 2 in heinemann book)!!
Can i get this done by Saturday??

Okey, thanks a lot!

I'm just about managing 7/8 hours a day and almost finished with this Unit, just need to patch up a few of the spec points. I think it took me a full day to revise Biotechnology properly. Start early tomorrow and you should have it done by the end of the day?

The perfect definition of succession would have to be the one OCR use:
- Succession is the directional change in a community of organisms over time.

Again, from the OCR book:
- The climax community can be the name given to the final, most stable community reached.

I think conservation and preservation has been done before on this thread. However, conservation is also in the OCR glossary, so definitely learn that:
- Conservation is the maintenance of biodiversity, including diversity within species, genetic diversity within species and maintenance of a variety of habitats and ecosystems

Preservation is when the area is kept exactly as it is (as opposed to active management which is conservation). So there's no interference from the outside.

Do you mean definitions from the endorsed by OCR Heinemann book or definitions from the exam board?

Wow that was quick, yea i'll do that but i think I'm going to start now instead. I'm absolutely dreading this exam, there is way to much content. Have you finished revising the other modules?

The ones endorsed by OCR. Surely if they are endorsed by OCR, then they are the correct ones (or so my teacher likes to bang on about)

Do the exam board print their own definitions?

Try and cover as much ground as you can today but i'd say Module 2 hasn't really got as much ground as the other modules it's just remember the steps of the techniques that takes the most work (PCR, automated sequencing, genetic engineering)
Nahh if still got about 2 days worth of revising left! It's annoying how only a third of this exam is re-call