Author Topic: Edexcel biology 2012 June scientific article (Discussions)  (Read 11270 times)

Offline MKh

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Re: Edexcel biology 2012 June scientific article (Discussions)
« Reply #15 on: March 28, 2012, 07:07:41 pm »
^'Explain the difference between a correlation and causal relationship'

Mind answering it?
Oh no, I don't mind. But I will give the answer tomorrow. Is it ok?

Offline sweetsh

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Re: Edexcel biology 2012 June scientific article (Discussions)
« Reply #16 on: March 28, 2012, 07:08:44 pm »
^'Explain the difference between a correlation and causal relationship'

Mind answering it?


I guess this means the cause and correlation

"Correlation does not imply causation"


Correlation means that two variables correlate together but they they do not cause each other. Hence none of them is dependent on the other. (So you can put any of them on any of the axis when drawing a graph)
Cause is when a variable cause the another. Hence A causes B or A causes B. Where one is called "independent" the other is "dependant".For example, the light intensity and rate of photosynthesis; the increase in light intensity increases the rate of photosynthesis.. So the light intensity is on the x-axis while the rate is on the y-axis

Offline hixam

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Re: Edexcel biology 2012 June scientific article (Discussions)
« Reply #17 on: March 29, 2012, 07:27:32 am »
Thank you to all. please post more questions

Offline Most UniQue™

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Re: Edexcel biology 2012 June scientific article (Discussions)
« Reply #18 on: March 29, 2012, 11:43:41 am »
;)

Your post has been deleted. The article is already attached in the first post.

Offline MKh

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Re: Edexcel biology 2012 June scientific article (Discussions)
« Reply #19 on: March 29, 2012, 09:39:27 pm »
Thank you to all. please post more questions

These were just self-made questions by me. Try making questions for yourself - it will help your understanding.

Offline High-R

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Re: Edexcel biology 2012 June scientific article (Discussions)
« Reply #20 on: March 31, 2012, 08:46:05 pm »
In paragraph/line 3...they have mentioned "type2 diabetes, heart disease and certain types of cancer"...they could ask us sumthing like a cause and correlation question....

even symptoms/risks of heart disease, type2 diabetes cud be asked!
....a general question on other risk factors of heart disease =P refering to unit1 studies!

wats thin media images?..and paragraph 7..cud any1 explain :S....

it wud be much appreciated if u all discuss watever concepts/points ur eye can relate to the units! so we all can revise those points and ace it together (Y) iA! :D

Offline High-R

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Re: Edexcel biology 2012 June scientific article (Discussions)
« Reply #21 on: April 02, 2012, 09:48:59 pm »
any progress here?

more questions please? :P

Offline hixam

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Re: Edexcel biology 2012 June scientific article (Discussions)
« Reply #22 on: April 03, 2012, 02:47:21 am »
ethical issues of DBS?
Can worsen conditions of diseases if not placed in the right area of brain, not 100% guaranteed to work, costly?, only available to patients with severe conditions.

why/how does parkinsons cause tremors and involuntary movement?
Parkinsons disease results in death of dopamine secreting neurones in the basal ganglia, which normally release dopamine in motor cortex. Therefore the motor cortexes are not able to recieve dopamine which leads to loss of control of movement and tremors.

list shortcomings of levedopa and drug-telated treartment?
advantages of DBS over other treatments?
Do not have to take tablets, can be calibrated for optimum results

describe and explain side effects of DBS?
apathy (emotions become supressed), hallucinations, compulsive gambling,
hypersexuality, cognitive dysfunction (loss of intellectual functions), and depression (I assume it disrupts Serotonin levels?)

Explain ( in short detail) how DBS works to traet brain disorders?
DBS sends high frequency electrical impulses to specific areas to interfere with brain activity (passing of impulses through motor neurones) and regain some control.

Explain why DBS can be used to treat a multitude of disorders?
The lead for DBS can be placed at different areas of brain according to different symptoms

Offline maania

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Re: Edexcel biology 2012 June scientific article (Discussions)
« Reply #23 on: April 05, 2012, 10:03:28 pm »
salam
http://edexcelbiosolutions.com/

did anyone come across this website ?
 has anyone purchased this pdf file  ?
« Last Edit: April 05, 2012, 10:05:23 pm by maania »

Offline farhanyen

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Re: Edexcel biology 2012 June scientific article (Discussions)
« Reply #24 on: April 10, 2012, 02:56:46 pm »
I haven't used that website before but I think the best questions and answers are by Examwizard(for edexcel). They can be found for all science AS and A2 on thies website. Hundreds of questions per unit thousands per subject. Comes with answers. Very similar to past papers, some are from past papers. It is by edexcel and they sell it at 200 pounds per subject,but you can get it free here.

Offline nusky

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Re: Edexcel biology 2012 June scientific article (Discussions)
« Reply #25 on: May 05, 2012, 04:56:22 pm »
comments to scientific article

Offline nusky

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Re: Edexcel biology 2012 June scientific article (Discussions)
« Reply #26 on: May 05, 2012, 05:01:12 pm »

Offline arnab

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Re: Edexcel biology 2012 June scientific article (Discussions)
« Reply #27 on: May 19, 2012, 04:55:33 pm »
Q&A to scientific article by stafford, click link below.
http://www.scribd.com/doc/89838095/Scientific-Article-Questions-Answers-by-Stafford-Final

Thank you so much for this but what is stafford?

Offline BlacKHawK

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Re: Edexcel biology 2012 June scientific article (Discussions)
« Reply #28 on: May 20, 2012, 05:18:27 am »
Q&A to scientific article by stafford, click link below.
http://www.scribd.com/doc/89838095/Scientific-Article-Questions-Answers-by-Stafford-Final
Thanks Nusky.... an actual life saver...

Offline N.z

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Re: Edexcel biology 2012 June scientific article (Discussions)
« Reply #29 on: June 15, 2012, 08:37:28 pm »
Hey all, paper 5 exam is a week from today and I have just heard about this scientific article. Do you think I'm too late, or is there still time to study the article and scrutinize it well? and how long will it take to study it?