F215 - Revision thread 13th June 2011

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URGENT

Is the resit test for f215 definitely on the 13 of june while f214 is on the 23??? i messed up w/ dates before so id be grateful if someone could tell. Ill even exchange notes n past papers for info lol :colondollar:

F215 - 13th
F214 - 22nd

:smile:

Reply 201

Nadooo

Original post by sportycricketer

F215 - 13th
F214 - 22nd

:smile:

cheers

what are the times? ill upload some papers in exchange later ....thanks a lot bro :biggrin:

Reply 202

sportycricketer

Original post by Nadooo

cheers

what are the times? ill upload some papers in exchange later ....thanks a lot bro :biggrin:

F215 is in the afternoon and F214 is in the morning :smile:

Reply 203

Nadooo

Original post by sportycricketer

F215 is in the afternoon and F214 is in the morning :smile:

thanks

Reply 204

Tobia_s

Original post by dunnicare

That was so cool.

In another news DOES ANYONE HAVE THE JANUARY 2011 EXAM? I NEED MORE PRACTICE!!!

Scratch that I found it! WOOOOOOW!

Reckon you could please post a pdf copy of the paper mate? :redface:

Thanks a lot
And the mark scheme; although that's not as important

Reply 205

dunnicare

Original post by Tobia_s

Reckon you could please post a pdf copy of the paper mate? :redface:

Thanks a lot
And the mark scheme; although that's not as important

I don't know how to upload things in PDF. :redface:

But here's the website I got it from. You may have to make an acount to access them. It's the best I can do. :smile:

http://www.studentcreche.co.uk/showthread.php/1184-January-2011-OCR-F215-A-Level-Biology-Paper

e: What a dumb negger.

(edited 12 years ago)

Reply 206

sportycricketer

Original post by Tobia_s

Reckon you could please post a pdf copy of the paper mate? :redface:

Thanks a lot
And the mark scheme; although that's not as important

I've got a copy but dont know how to send it :smile:

Reply 207

J DOT A

What is genetic drift and why do people such as those in the Amish community have more genetic diseases.

Reply 208

Tobia_s

Original post by sportycricketer

I've got a copy but dont know how to send it :smile:

Easy! Click on 'Go Advanced' just below the quick reply box; right next to the 'post quick reply' option.

Then when you get to the next page, scroll down slightly to the next box which is called 'Additional options'. In this box there's a 'manage attachments' button. Click on this and a pop-up window opens; it's fairly straightforward from here. Just click on the 'upload file' button and select the file from wherever it is on your computer.

Thanks a lot :smile:

Reply 209

sportycricketer

Jan 2011 Paper :smile:

f215 jan 2011 paper.pdf176.3KB

Reply 210

ibysaiyan

Original post by J DOT A

What is genetic drift and why do people such as those in the Amish community have more genetic diseases.

Genetic drift is a random,sudden change in the gene pool of a given population (often small ones e.g islands).The changes arise due to the increase in different allele frequency.

No idea about the amish community..

Reply 211

Tobia_s

Original post by sportycricketer

Jan 2011 Paper :smile:

Thanks a lot. You're a lifesaver :biggrin:

Reply 212

182blink

Original post by sportycricketer

Jan 2011 Paper :smile:

Yayy

Thanks alot!!!!
I was wondering if you could post the markscheme???

Reply 213

.r.

Original post by J DOT A

What is genetic drift and why do people such as those in the Amish community have more genetic diseases.

Like said above, genetic (allelic) drift is the change in allele frequency in a population. The Amish don't mix with other non-Amish much so their population has a very restricted gene pool, and they also usually live in small communities. They'd have more genetic diseases because one mutation can be inherited and passed down without it having a chance to be 'bred' out. <-- sounds right to me lol

In other news..sliding filament model does my head in!

Reply 214

ibysaiyan

Original post by .r.

What buzzes you about sliding filament model? Just remember the bands.. and what happens when active potential passes through post-muscular membrane =]

Here's what happens:
Sodium ions start to increase in conc. near the pre- end from there they stuck onto the post receptors in doing so as that side gets polarized (i.e changes in potential difference) Calcium ions start to flux in from the sarcoplamisc reticulum,these Calcium ions bind onto the tropomyosin causing them to detach from the actin myosin filament,in this manner troponin chain moves...

Correct me if I am mistaken.. I did this months ago