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EDEXCEL Biology JUNE 2012 Pre-release article

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Does any one think they may ask about the specific immune system as it mentions how cortisol suppresses it.. if so to what depth? :s

Reply 381

anna123

Can anyone tell me why changes in DNA methylation patterns can be 'especially problematic in individuals with genetic susceptibilities to specific diseases'? (P46)

Reply 382

.snowflake.

Original post by rjtweddle

Does any one think they may ask about the specific immune system as it mentions how cortisol suppresses it.. if so to what depth? :s

probably will mention it, as a nice big mark Q. I can see speciation come up, cos it did in jan 11 and they did crap.

Reply 383

aqua05

hii guys can someone explain to me how the uncoupling protein disrupts respiration process ie electron transport chain ?

Reply 384

This Honest

Original post by .snowflake.

probably will mention it, as a nice big mark Q. I can see speciation come up, cos it did in jan 11 and they did crap.

Hey did you get my inbox?

Reply 385

.snowflake.

Original post by This Honest

Hey did you get my inbox?

yup. the majority of the Q's I have have already been posted/ similar things have been posted.

Reply 386

cisne

Original post by .snowflake.

probably. the guy that wrote it is from the maldives.

I've a few questions I'm stuck on.

Suggest the mechanism by which UCP -1 is only found in BAT (consider gene expression here).

Why might young girls be more at risk from TV women’s’ images than models?( While most concern has surrounded thin fashion models, greater risk may lie in the more everyday ambient images of ‘permarexic’ – visibly unhealthily thin – children’s television presenters, actresses and innocuous newsreaders who form the backdrop to the visual lives of girls and women.)

He is not from Maldives...He is a foreign teacher....

Reply 387

This Honest

Original post by .snowflake.

yup. the majority of the Q's I have have already been posted/ similar things have been posted.

Cool thanks again :smile:

Reply 388

arnab

guys what are the ethicals issue related to stem cells?

also can someone explained to me the contrast effect on paragraph 25?

Original post by cisne

He is not from Maldives...He is a foreign teacher....

Original post by This Honest

Can any of you help me out?

Reply 389

This Honest

Original post by arnab

guys what are the ethicals issue related to stem cells?

also can someone explained to me the contrast effect on paragraph 25?

Can any of you help me out?

They are viable and embryonic stem cells have potential to life
They can become cancerous
Certain groups are completely against the use of stem cells

Can't remember what the contrast effect is, I'm still going over unit 5 bio

Reply 390

7even

So is anyone else completely ****ed for this exam? :smile:

Reply 391

Rainbow_2010

Yep meeee, oh God hopefully it wont b as bad as we think , im stressing out so much cus of the stupid article :frown:

Reply 392

rudizzy123

What is DNA methylation?

Reply 393

.snowflake.

Original post by rudizzy123

What is DNA methylation?

sticking a CH3 (methyl) group to any cytosine molecule that has a guanine molecule before it in the chain.

Reply 394

fiza_1

what are "Epigenetic changes"?

Reply 395

rudizzy123

Original post by fiza_1

what are "Epigenetic changes"?

They run the universe, they activate the bodily emotion love. Epigenetic changes are among the most desirable changes in history and the phenomena has plagued scientists for years.