EDEXCEL Biology JUNE 2012 Pre-release article
Biology exam discussion - share revision tips in preparation for GCSE, A Level and other biology exams and discuss how they went afterwards.
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Re: EDEXCEL Biology JUNE 2012 Pre-release articlerelease energy over a longer period of time(Original post by arnab)
thanks!!
I just thought of another possible question :
Describe how a programme of aerobic training can reduce the body fat and have an improvement on transportation of oxygen to the muscles?
use oxygen
plenty of mitochondria
increased metabolism so reduce fats
training generally reduces cholesterol levels and increases HDL's ratio to LDL's so more fat being transported to liver
Am I on the right track?
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Re: EDEXCEL Biology JUNE 2012 Pre-release articleI have no idea man cos i did just make it up lol but it sounds about right(Original post by This Honest)
release energy over a longer period of time
use oxygen
plenty of mitochondria
increased metabolism so reduce fats
training generally reduces cholesterol levels and increases HDL's ratio to LDL's so more fat being transported to liver
Am I on the right track?
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Re: EDEXCEL Biology JUNE 2012 Pre-release articleSNAB Biology is not easy. DIE SNAB(Original post by Akbar2k7)
Your syllabus looks so much better than AQA's lucky people AQA can die semantic idiots :P. -
Re: EDEXCEL Biology JUNE 2012 Pre-release articleEpigenetics: http://www.youtube.com/watch?v=kp1bZEUgqVI(Original post by d_94)
LOL (:
Look at the following websites:
http://en.wikipedia.org/wiki/DNA_methylation
http://www.healthiertalk.com/methyla...planation-0101
http://www.news-medical.net/health/D...thylation.aspx
I hope they helped.
But I don't think they'll ask in details.
Sooo.
Now how about the advice. I mean its ah-mazing you got an A. Woow.
Thought this would be much better, I just love Scishow D: -
Re: EDEXCEL Biology JUNE 2012 Pre-release articleThats good too (: Thanks(Original post by verdikt)
Epigenetics: http://www.youtube.com/watch?v=kp1bZEUgqVI
Thought this would be much better, I just love Scishow D: -
Re: EDEXCEL Biology JUNE 2012 Pre-release articlegreat qs! could u pleas send me the mark scheme? cheers in advance(Original post by aqua05)
As i promised, here are some of the questions I came up with..i'll post more at night
discuss the effect of media, body image and dieting on your body.
describe the effect/function/structure of BAT on body weight.
where is BAT stored?
describe the effect( advantages & disadvantages) of blockbuster weight pills on your health e g side effects.
what are anti-obesity therapies? advantages & disadvantages of using them.
describe the effect of obesity on body health.
what is the difference between obese and obesity.
what are the treatments provided by the NHS to treat obesity.
ways to reduce obesity.
how has obesity increased over the years.
describe ways to measure obesity.
why is obesity considered " detrimental to health"
describe the effect/function/structure/place where WAT is stored.
what are triglycerides? structure/effect/function/place in the body it is found.
why is apple body shape considered more dangerous than fat stored around the hips and thighs.
symptoms of type 2 diabetes/heart disease/cancer
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Re: EDEXCEL Biology JUNE 2012 Pre-release article
can someone please explain to me this paragraph..
I just dont seem to uderstand it
Females today are exposed to evolutionarily novel stimuli that deceive cognitive and neurological processes whose function developed to evaluate other females. As some females use a typical media physique to establish norms as points of comparison it has for many become a case of ‘keeping up with the Boneses’.
thanks
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Re: EDEXCEL Biology JUNE 2012 Pre-release article
Anyone got an answer to "Why is the waist-hip ratio (rather than the waist or hip measurement alone) used as an indicator in the studies on sexual selection?" I feel like it's another one of those questions where I'll ramble on about some scientific reason - though in the back of my mind the answer is simply 'taking two factors into account increases the reliability of any results' (or something on those lines). Any help with this would be greatly appreciated.
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Re: EDEXCEL Biology JUNE 2012 Pre-release articlethanks so much! our school is beyond useless and this article is confusing, i find(Original post by aqua05)
i just made up random questions..dont have a mark scheme for it at the moment. when i go over with my teacher i'll post it here
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Re: EDEXCEL Biology JUNE 2012 Pre-release article
Iii... can someone please explain to me the difference between cognitive and neurological processes? Paragraph 27
And what does it mean by " keeping up with the boneses" paragraph 27
Can someone please explain to me what are" evolutionary novel stimuli"?? What causes them? Paragraph 27
Please someone help me out here. Thanks.Last edited by aqua05; 16-06-2012 at 06:32. -
Re: EDEXCEL Biology JUNE 2012 Pre-release articlehey man, just wanted to ask, what do we need to know about respiratory meter for unit5? do we have to know how to draw it and set it up? really confused on this(Original post by This Honest)
x)
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Re: EDEXCEL Biology JUNE 2012 Pre-release articleHey,(Original post by arnab)
hey man, just wanted to ask, what do we need to know about respiratory meter for unit5? do we have to know how to draw it and set it up? really confused on this
You need to know the actual experiment (if you need me to write it up, I'll do that tomorrow around 1-2PM as i'll be out in the morning
We need to know how to use the respirometer to measure the volume of oxygen taken up
I'm 90% sure we don't have to draw the apparatus but you know what....I'm gonna memorise that diagram this week lol cheers! -
Re: EDEXCEL Biology JUNE 2012 Pre-release articleahh cool. Thanks!(Original post by This Honest)
Hey,
You need to know the actual experiment (if you need me to write it up, I'll do that tomorrow around 1-2PM as i'll be out in the morning
We need to know how to use the respirometer to measure the volume of oxygen taken up
I'm 90% sure we don't have to draw the apparatus but you know what....I'm gonna memorise that diagram this week lol cheers!
How you revising for the articles? I have just re-read after a week of doing unit4s and i dont remember sh*t all !!!


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Re: EDEXCEL Biology JUNE 2012 Pre-release article
Hey guys!
In the article it says that BAT is able to regulate core body temperature (end of paragraph 29). So if the temperature falls of the environment, how does BAT raise core body temperature? Does it do this by allowing chemiosmosis to occur and ATP to be produced? -
Re: EDEXCEL Biology JUNE 2012 Pre-release articleWhat it does it is enable the glucose to be respired, but the uncoupling protein prevents ATP from being formed therefore making the energy become lost as heat. It does this by enabling H+ ions to diffuse back into the inner mitochondrial membrane rather than necessarily having to diffuse back via an ATP synthase protein on the membrane.(Original post by avataraang)
Hey guys!
In the article it says that BAT is able to regulate core body temperature (end of paragraph 29). So if the temperature falls of the environment, how does BAT raise core body temperature? Does it do this by allowing chemiosmosis to occur and ATP to be produced? -
Re: EDEXCEL Biology JUNE 2012 Pre-release articledo you have to know that(Original post by marc_h94)
What it does it is enable the glucose to be respired, but the uncoupling protein prevents ATP from being formed therefore making the energy become lost as heat. It does this by enabling H+ ions to diffuse back into the inner mitochondrial membrane rather than necessarily having to diffuse back via an ATP synthase protein on the membrane.

Also what part of unit 1 and 2 do you think we should be revising for the unit5 article? -
Re: EDEXCEL Biology JUNE 2012 Pre-release articleAh yeah that makes sense... lol(Original post by marc_h94)
What it does it is enable the glucose to be respired, but the uncoupling protein prevents ATP from being formed therefore making the energy become lost as heat. It does this by enabling H+ ions to diffuse back into the inner mitochondrial membrane rather than necessarily having to diffuse back via an ATP synthase protein on the membrane.
But what if temperature rises? Will chemiosmosis occur as normal? -
Re: EDEXCEL Biology JUNE 2012 Pre-release articleNo to be honest it's background and they wouldn't expect you to know it. HOWEVER they could use that example in an apply your knowledge scenario about the uncoupling protein mentioned in the article.(Original post by arnab)
do you have to know that

Also what part of unit 1 and 2 do you think we should be revising for the unit5 article?