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# Bly2h, chy2h, phy2h Watch

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1. (Original post by Superbec)
When they line up in the centre of the cell, two things called Centrioles move to the poles of the cell, they then send out spindle microtubles that attach to the middle of the chomosomes (the centomeres) and pull them apart.

This is A level (I'm guessing) but I don't know for sure as I'm still on GCSE. Hope this helped
yeah we learnt that, but the questions will never be on that so dont worry about all the fancy terms, my exam just had to interpret a table with different gametes from different animals
2. (Original post by king101)
Ah ok, So let me see;
1/ Cell=46 Chromosomes {parent+father}
2/Duplicate=96 chromosomes
3/This is 2 pairs of chromosomes
4/2 Pairs of chromosomes line up at centere of cell
5/They are pulled apart, so different chromosomes are for each cell (mixture of father and mother=variation)
6/Membrane forms around then, they then become two new cells, with only 92/2=46 in each cell
7/Then these cells now divide again meaning 46/2 and 46/2 for the other cell.
yup and this occurs in sexual organs
3. Wohoo, you sure the stuff about pairs is correct lol^^
4. Thx for all the help!, I understand it know except for how the 2 pair of chromosomes (mother and father- 42 chromosomes and the second pair mother and father -46 chromosomes) are pulled apart but apart from that thx
5. (Original post by king101)
Thx for all the help!, I understand it know except for how the 2 pair of chromosomes (mother and father- 42 chromosomes and the second pair mother and father -46 chromosomes) are pulled apart but apart from that thx
lol dont panic about pairs, learn the basics, the questions are never too complex.

they both have equal number of chromosones -46? where did you get 42 from?
6. lol i meant 46 ;p
7. Do u know if its the UMS that goes foward or the actual mark.. i hope actual mark in unit 1 because i got in chem 43/45 lol
8. (Original post by DonBorat)
lol dont panic about pairs, learn the basics, the questions are never too complex.

they both have equal number of chromosones -46? where did you get 42 from?
Thx for all the help, now can you help me understand a past paper question lol

http://store.aqa.org.uk/qual/gcse/qp...W-QP-JAN10.PDF

Question 4B(i).
I do not understand that question, read it and tell me what you think of it and tell me why on the markscheme the answer is that. Once u done that, ill tell u why im finding that really confusing.
9. (Original post by king101)
Do u know if its the UMS that goes foward or the actual mark.. i hope actual mark in unit 1 because i got in chem 43/45 lol
UMS, 100ums could mean you got 40/45

you need 360 UMS out of 400 to get an a*

and yeah a raw mark of 43 would definitely be an a* unless the paper was so easy 44 was an a* :P
10. (Original post by king101)
Thx for all the help, now can you help me understand a past paper question lol

http://store.aqa.org.uk/qual/gcse/qp...W-QP-JAN10.PDF

Question 4B(i).
I do not understand that question, read it and tell me what you think of it and tell me why on the markscheme the answer is that. Once u done that, ill tell u why im finding that really confusing.
ummm, theyre the same at 12.5
above 12.5 its slower for falt wreck and faster for saw wreck

for the second bit,
saw wrack is further down and recives less light for photosysnthesis which produces less nutirents for growth etc

thats quite confusing haha
11. so at a higher light intensity the rate of photosynthesis is faster right, due to oxygen being produced. The more oxygen being produced the photosynthesis is ocuring therefore they reach the surface much faster at higher light intensity.

that makes sense what i said right?

However on the markscheme! it says; the higher light intensity the slower the rate of photosynthesis.. how is that! ??

nvm i workeed it out ;p
12. Someone messaged me asking for the "3" papers
Attached Images
13. AQA-CHY3H-W-QP-Jun10.pdf (212.5 KB, 166 views)
14. AQA-CHY3H-W-MS-June_2010.pdf (130.2 KB, 85 views)
15. AQA-PHY3H-W-QP-Jun10.pdf (286.6 KB, 563 views)
16. AQA-PHY3H-W-MS-JUN10.PDF (134.4 KB, 595 views)
17. and the B3......
Attached Images
18. AQA-BLY3H-W-QP-Jun10.pdf (310.3 KB, 858 views)
19. AQA-BLY3H-W-MS-June_2010.pdf (117.2 KB, 1639 views)
Someone messaged me asking for the "3" papers
Thank you so much! x
21. 2 days till biology exam Doing a mock tonight and tomorrow night
22. goof luck yeh 2 days!!!`
23. just did the exam!

I've either done really bad or really good... not sure which one though

On the penultimate question
"What process causes shivering?"

What did you guys put down for that... I put respiration
24. (Original post by puddinboy)
just did the exam!

I've either done really bad or really good... not sure which one though

On the penultimate question
"What process causes shivering?"

What did you guys put down for that... I put respiration
I feel exactly the same, I cut it a bit fine with the time though, guess i didn't need to write an essay for a couple of questions

I put respiration too, but i wasn't sure. From people i talked to afterwards, quite a few put respiration but a few put negative feedback

Just glad it's over tbh. Just chemistry and physics to go
25. Let Me Make this Clear; Respiration=CORRECT so congratzz!!
26. (Original post by puddinboy)
just did the exam!

I've either done really bad or really good... not sure which one though

On the penultimate question
"What process causes shivering?"

What did you guys put down for that... I put respiration
I'm quite confused but more on the fail (sorry for negative thoughts)
I wrote respiration aswell but I lost abit of hope when this girl started saying it was wrong

what did you put for the right concentration when the boy had the meal?How many units I put 3

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