I think the midbrain transmits information between the two cerebral hemispheres whilst the thalamus 're-routes' incoming sensory information.(Original post by hey-hey-hey)
is this right, both the mid brain and the thalamus coordinate sensory information..Mid brain, sends info to visual cortex so does thalamus?
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Edexcel A2 Biology Unit 5 (6BIO5) - 22/06/2011- OFFICIAL THREAD ! watch
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tkoki1993
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- 21-06-2011 21:44
(Original post by CHemgeo)
ahh in all this bio revision and isolation from the rest of the world you have no idea how much that made me laugh XD
I seriously need to get out more -
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- 21-06-2011 21:44
It's like Edexcel is telling us they're going to viogorously rape us for 1 hour 45 mins
. I've never been nervous about an exam until now.
(Edexcels Current Mood:)
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- 21-06-2011 21:47
I'm confused about Q2)d on the june 2010 paper. I thought that the resting potential is restored because of K+ ions diffusing back into the axon down the concentration gradient caused by the repolarisation of the membrane, and the resting potential is when the electrochemical gradient is balanced out by the concentration gradient of K+ ions. In the mark scheme it talks about the K+ ions moving because of a charge difference aand the diffusion gradient balancing the PD :/
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- 21-06-2011 21:48
Who has the examiner report for june 2010 paper please? Edexcel now have a secure log in to check anything and i dont have the password
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- 21-06-2011 21:49
Who has the examiner report for june 2010 paper please? Edexcel now have a secure log in to check anything and i dont have the password
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yagmurainie
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- 21-06-2011 21:50
june 2010 examiner reports if any of you have it, can you post it guyss
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High As A Kite
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- 21-06-2011 21:52
That QandA doc about the article... where is it from?
how reliable too? -
yagmurainie
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- 21-06-2011 21:52
(Original post by claire4095)
Myostatin limits the number of stem cells defferentiating in to muscle cells. Creating antibodies artificially that can bind to myostatin may increase the likely hood of the persons immune system attacking the myostatin meaning more stem cells can differentiate in to muscle cells.
Hope that helpsits the limited knowledge i have on antibody therapy
perfect!! it helped a lot thankss and good luck in the exammm -
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- 21-06-2011 21:54
(Original post by gildartz)
I'm confused about Q2)d on the june 2010 paper. I thought that the resting potential is restored because of K+ ions diffusing back into the axon down the concentration gradient caused by the repolarisation of the membrane, and the resting potential is when the electrochemical gradient is balanced out by the concentration gradient of K+ ions. In the mark scheme it talks about the K+ ions moving because of a charge difference aand the diffusion gradient balancing the PD :/ -
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- 21-06-2011 21:54
Who has the examiner report for june 2010 paper please? Edexcel now have a secure log in to check anything and i dont have the password
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- 21-06-2011 21:56
(Original post by patrick93)
K+ does move out to repolarise the cell but too much moves out so the cell becomes more negative than its resting potential (hyperpolarised). So to restore its resting potential from its hyperpolarised state the K+ moves back in to the cel. -
yagmurainie
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- 21-06-2011 21:56
Give an explanation for the movement of K ions during repolarisation (3) june 2010
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StudentToday
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- 21-06-2011 21:58
How does Recombinant Bacteria cause human cells to express the gene in the plasmid of the bacteria???
Plasmid is modified and inserted back ino bacteria. inserted in human. Bacteria replicates and each bacteria has the gene. Then wat happens??
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- 21-06-2011 21:59
(Original post by L2R1C)
Hey, the things I have made notes on/revised for the article are:
1.Gene therapy
2. Viruses
3. Protein synthesis
4. Clinical trials
5. Brief notes on heart problems
6. performance enhancing drugs - ethical issues ect.
What else should I look over?
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- 21-06-2011 22:00
(Original post by StudentToday)
How does Recombinant Bacteria cause human cells to express the gene in the plasmid of the bacteria???
Plasmid is modified and inserted back ino bacteria. inserted in human. Bacteria replicates and each bacteria has the gene. Then wat happens??
Thanks in advanced..
I thought recombinant bacteria had nothing to do with altering the human cell DNA, you're probably thinking about gene therapy and using viral vectors -
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- 21-06-2011 22:01
(Original post by gildartz)
So the concentration gradient isn't involved when K+ moves back in? -
ballroomboy
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- 21-06-2011 22:02
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yagmurainie
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- 21-06-2011 22:04
(Original post by darkiee)
Who has the examiner report for june 2010 paper please? Edexcel now have a secure log in to check anything and i dont have the password -
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- 21-06-2011 22:06
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