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Edexcel A2 Biology Unit 5 (6BIO5) - 22/06/2011- OFFICIAL THREAD !

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Reply 3920

M Kh

Original post by iesians

waiting for the stuff M Kh is gonna post today !!!!

Original post by ishtarbb

Sorry but can you send them to me as well? i mean if you not gonna upload them here :tongue:

im a private student and got really few resources :s-smilie:

thank you so much!

Original post by This Honest

You would be doing me a massive favour if you could send me the notes too
Congrats on that awesome score.

Original post by ghogho

thank u sooooooo much :biggrin:

Original post by greenhamrolls

Hi there, I saw you that you might be able to help with some revision materials etc? I'm so stressed with this exam and I only need a C, but I just can't get the questions right. I've learnt most of the stuff from the textbook but i'm finding it so difficult to apply it to the paper.
I literally just need like 55-60% (or higher :wink:

)to be able to get what I need so I can go to uni..
Could you offer any advice?

Original post by 19941994

Also would you be able to send me the revision notes today please? Would appreciate it! :smile:

Here you are guys. Attached.
Actually, these aren't made by me. A fellow TSRer uploaded these last year. All rights reserved and all credits to the original uplaoder.

(edited 11 years ago)

Respiration - oki notes.pdf315.9KB

Unit 5 Biology - Topic 7.pdf762.1KB

Reply 3921

19941994

Original post by rudizzy123

How long is this exam? Past papers fluctuate between 1 hr 30 and 1 hr 45?

1 hour 45

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

Reply 3922

19941994

Original post by britchick

Experiencing genuine fear for this exam. Do not feel prepared at all.

You're not alone. Im so worried ahh! :frown:

tomorrow is going to be such a stressful day

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

Reply 3923

19941994

Original post by M Kh

Here you are guys. Attached.
Actually, these aren't made by me. A fellow TSRer uploaded these last year. All rights reserved and all credits to the original uplaoder.

Thanks so much, you're amazing :biggrin:

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

Reply 3924

M Kh

Original post by ishtarbb

Sorry but can you send them to me as well? i mean if you not gonna upload them here :tongue:

im a private student and got really few resources :s-smilie:

thank you so much!

Original post by This Honest

You would be doing me a massive favour if you could send me the notes too
Congrats on that awesome score.

Original post by ghogho

thank u sooooooo much :biggrin:

Original post by greenhamrolls

)to be able to get what I need so I can go to uni..
Could you offer any advice?

Original post by 19941994

Also would you be able to send me the revision notes today please? Would appreciate it! :smile:

Unit 5 topic 8 notes will be attached tomorrow. Can't find them now. I will try my best to upload them tomorrow.

Reply 3925

rudizzy123

Original post by 19941994

1 hour 45

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

It says on the edexcel specification 1 hour 45 :/

Reply 3926

rudizzy123

How many core practicals are there?

spirometer - jan 2012
respiration - jun 2011
and habituation?

am i right? Is it likely habituation will come up?

Reply 3927

19941994

Original post by rudizzy123

It says on the edexcel specification 1 hour 45 :/

Yeah thats what i said lol :smile:

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

Reply 3928

rudizzy123

Original post by 19941994

Yeah thats what i said lol :smile:

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

1.30* my bad :frown:

Reply 3929

nadzzdan

Original post by rudizzy123

How many core practicals are there?

spirometer - jan 2012
respiration - jun 2011
and habituation?

am i right? Is it likely habituation will come up?

Very likely but rather revise all of them to be on the safe side

Reply 3930

ghogho

Original post by M Kh

Unit 5 topic 8 notes will be attached tomorrow. Can't find them now. I will try my best to upload them tomorrow.

thx alot and sry for tiering u :smile:

Reply 3931

19941994

Original post by rudizzy123

1.30* my bad :frown:

Oh right, no its definitely 1 hour 45 dw. The january 2012 paper says 1hr 45 so it will be the same for our paper

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

Reply 3932

britchick

How much revision of AS/unit 4 stuff have people done?

Reply 3933

rudizzy123

Original post by 19941994

Oh right, no its definitely 1 hour 45 dw. The january 2012 paper says 1hr 45 so it will be the same for our paper

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

Fair enough :smile:

It doesn't matter too much, eithier 10 minute each for the first 6 question or slightly over anyway.

Do you know which core practicals there are btw?

Reply 3934

sammy-lou

Some of you are quite likely to have seen this already but thought I'd share for those of you who haven't. This guy has taught me a large proportion of what my teachers failed to teach me, and he's so adorable!

[video="youtube;O6bInBQXtmM"]http://www.youtube.com/watch?v=O6bInBQXtmM&list=PL9CAF3DEF0A718A50&index=100&feature=plpp_video[/video]

Obviously not syllabus-specific, but he covers pretty much everything you're likely to need!

Reply 3935

19941994

Original post by rudizzy123

Fair enough :smile:

It doesn't matter too much, eithier 10 minute each for the first 6 question or slightly over anyway.

Do you know which core practicals there are btw?

I think 15 minutes will make a big difference! Especially as we'll constantly be referring to the article :/

Yeah i think its just the habituation practical, the spirometer practical and measuring the uptake of O2 (insects) :smile:

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

Reply 3936

Freyma

Can someone explain how the medulla controls breathing rate?

Reply 3937

avataraang

Hey guys!
There is something from the scientific article in paragraph 20 that I don't understand:

"Brains of rats alternating between healthy and unhealthy foods... show significantly recruitments of neural circuits (CRF system) involved in stress reactions and promote the 'compulsive selection' of unhealthy food and undereating of healthy food.'

What does this mean?! Thanks!

Reply 3938

avataraang

Original post by Freyma

Can someone explain how the medulla controls breathing rate?

Medulla contains the inspiratory systems involved. So the mechanism is that if we increase exercise, there is greater CO2 concentration inside our blood and therefore chemoreceptors detect this and send impulses to the medulla.
To stimulate breathing, more frequent impulses are sent from the inspiratory centre to the intercostal muscles and diaphragm, causing them to contract more often and allowing greater tidal volume and breathing rate therefore increases.

Reply 3939

VickyDoodle

Original post by avataraang

The CRF system is the corticotrophin-releasing factor system. It mediates stress :smile:

So testing in rats showed that alternating between healthy and unhealthy food increased stress reactions and causes them to compulsively select the unhealthy food.

And again simplifying..
The rats switching between healthy and unhealthy food stressed them out, and made them pick the unhealthy food. (Like stress/comfort eating?)

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