[iesians]

(Original post by demdil)
i didnt like topic 8 that much.. so many new things, i know that it will be easy after we get the idea of the action potentials synapses etc but i guess i dont get the idea yet..
Khanacademy is cool i used it for biology unit 2 and it helped a lot.

ikr ! i studied respiration form khanacademy and now its stuck in my head ! WOW

[SimpleGirl]

I've been trying to go over topic 8 today; but, it was so tortuous, I gave up.

Does any have any useful notes they could upload or suggest a helpful website that'd be get me through it, please?

[Abrar_Higuain]

Can any suggest questions regarding UNIT 5 Scientific article

[SimpleGirl]

(Original post by Abrar_Higuain)
Can any suggest questions regarding UNIT 5 Scientific article

You should check out this thread:

http://www.thestudentroom.co.uk/show....php?t=1948344

It was made specifically for the pre release article. Quite a few people have already posted potential questions as well.

[Hanz_a93]

Hey can anyone explain to me what they were are trying to say on pages 60 of the SNAB book, the stuff below the heading 'DNA, lice and human evolution' and also on page 55? Both pages are so bludy confusing!

A brief summary would be nice! thankss )

[godknows]

guys does anyone's school give them good notes for the question 7 from the scientific article?

[kitriviolet]

just wanted to ask. will we be asked to write essays for unit 5? D:

(Original post by aqua05)
Helloo

This is a thread for all those seating for this exam in June.

We can share revision tips, resources and do discussion of the topics we have a problem in...or anything related to this exam

Hope revision is going good for you all

Good Luck!

[aqua05]

(Original post by kitriviolet)
just wanted to ask. will we be asked to write essays for unit 5? D:

No we dont have to

[aqua05]

can someone help me with this question..its a unit 5 one

Explain how chemical levels in the brain may change, resulting in illnesses such as parkinsons and depression???

[19941994]

Anybody have any good revision notes for unit 5 please? i planned to take my own notes but it's taking a lot longer than i hoped!


This was posted from The Student Room's iPhone/iPad App

[This Honest]

(Original post by aqua05)
can someone help me with this question..its a unit 5 one

Explain how chemical levels in the brain may change, resulting in illnesses such as parkinsons and depression???

neurones which produce dopamine are inactive
levels of dopamine decreases
transmission of nerve impulses involved in moving/coordination falls so tremors, stiffness depression may occur

low levels of serotonin triggers depression
serotonin is the neurotransmitter for controlling mood
depression may occur

something like that....

[Lightuponlight]

Is this the only thread for Biology :P

hows unit 4 going?
r u ppl practising only the new spec papers?

[d_94]

(Original post by Lightuponlight)
Is this the only thread for Biology :P

hows unit 4 going?
r u ppl practising only the new spec papers?

Yupp. I doing the new ones
My revision is going well. But I hope I can be fully prepared for once for this exam! God. I never completely ready for any exam. Haha.

[d_94]

Past Papers, Mark Schemes, and Revision Notes


Unit 4- The Natural Environment and Species Survival

The Unit 4.rar file includes:
Old syllabus past papers and mark schemes from 2002 June onwards.
All New syllabus past papers and mark schemes until 2011 June.
Revision cards and notes.
Link
http://www.mediafire.com/?fb0r11q2bsogo


Unit 5- Energy, Exercise and Coordination

The Unit 5.rar file includes:
Old syllabus past papers and mark schemes from 2003 Jan onwards.
All New syllabus past papers and mark schemes until 2011 June.
Revision cards and notes.
Link
http://www.mediafire.com/?6uj913ewcbbr6



Specification(Syllabus) and sample assessment material

Link
http://www.mediafire.com/?4qh9c1jyb3y56


Text Books and Revision Guides

A2-Biology-Edexcel

PDF Format
Link
http://www.mediafire.com/download.php?4nmdmah9f5q2gna

Answers
Link
http://www.mediafire.com/?542sd5zcgs8uhpw


A2 Biology-Endorsed

PDF Format
Link
http://www.mediafire.com/?sne7rqy4l8407b0


A2 Revision Guide

Link
http://www.mediafire.com/?j266uravbep9yaq

Edexcel A2 Biology Implementation and Assessment Guide for Teachers and Technicians

Link
http://www.mediafire.com/?y925l3km313joji



^^ Got that link from http://www.studentforums.biz/referen...biology-13416/

[aqua05]

(Original post by This Honest)
neurones which produce dopamine are inactive
levels of dopamine decreases
transmission of nerve impulses involved in moving/coordination falls so tremors, stiffness depression may occur

low levels of serotonin triggers depression
serotonin is the neurotransmitter for controlling mood
depression may occur

something like that....

Thanks got it:-)

[This Honest]

http://www.edexcel.com/migrationdocu...e_20100616.pdf

Q2bii

Can someone please explain how you calculate that and why?
I just did 3.7/24.4 times 100 to get me 15.2%
but it's 88.something%

[aqua05]

Heyguys.. just a quick question...if you are asked to describe the structure of the muscle fiber..how would you describe it?

[19941994]

(Original post by d_94)
Past Papers, Mark Schemes, and Revision Notes


Unit 4- The Natural Environment and Species Survival

The Unit 4.rar file includes:
Old syllabus past papers and mark schemes from 2002 June onwards.
All New syllabus past papers and mark schemes until 2011 June.
Revision cards and notes.
Link
http://www.mediafire.com/?fb0r11q2bsogo


Unit 5- Energy, Exercise and Coordination

The Unit 5.rar file includes:
Old syllabus past papers and mark schemes from 2003 Jan onwards.
All New syllabus past papers and mark schemes until 2011 June.
Revision cards and notes.
Link
http://www.mediafire.com/?6uj913ewcbbr6



Specification(Syllabus) and sample assessment material

Link
http://www.mediafire.com/?4qh9c1jyb3y56


Text Books and Revision Guides

A2-Biology-Edexcel

PDF Format
Link



http://www.mediafire.com/download.php?4nmdmah9f5q2gna

Answers
Link
http://www.mediafire.com/?542sd5zcgs8uhpw


A2 Biology-Endorsed

PDF Format
Link
http://www.mediafire.com/?sne7rqy4l8407b0


A2 Revision Guide

Link
http://www.mediafire.com/?j266uravbep9yaq

Edexcel A2 Biology Implementation and Assessment Guide for Teachers and Technicians

Link
http://www.mediafire.com/?y925l3km313joji



^^ Got that link from http://www.studentforums.biz/referen...biology-13416/

thank you so much!! the links are very useful

[d_94]

(Original post by 19941994)
thank you so much!! the links are very useful

Welcomee. Found those online.

[Rainbow_2010]

(Original post by This Honest)
http://www.edexcel.com/migrationdocu...e_20100616.pdf

Q2bii

Can someone please explain how you calculate that and why?
I just did 3.7/24.4 times 100 to get me 15.2%
but it's 88.something%

Hey its pretty simple, basically u just have to remember to take away the energy that the plants use from the GPP value given at 24.4,
24.4 x 10^6 - 3.7 x 10 ^6 that gives ur NPP
and then u calculate the perecentage by 2.07 x ^6 / 24.4 x 10^6 = ans x 100= 84.9%
Hope that helps