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AQA BIOL2 Biology Unit 2 Exam - 26th May 2011 watch

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1. 1 cell > 2 cells > 4 cells > 8 cells.

3 cell cycles.
2. ahh i got 1032 for the minutes for the 8 cell thing but converted it to hours so got 17 hours 12 minutes for my overall answer damn! should've read the q ..
3. (Original post by swiftylol)
Didnt the question say one cell cycle = 4hrs18min

work out 8 cell cylcles?

I did 4hrs = 240mins

+ 18 mins

x 8

Maybe I misred the question, I was in a rush :s
Yeah you only had to multiple by 3, to produce 8 cells.

As 1 cell divison = 3 cells
Second division = 6 cells
Third division = 12 cells
4. (Original post by swiftylol)
Didnt the question say one cell cycle = 4hrs18min

work out 8 cell cylcles?

I did 4hrs = 240mins

+ 18 mins

x 8

Maybe I misred the question, I was in a rush :s
1 division produces two cells, these 2 cells will divide to form 4, and those 4 form 8. Three divisions.
5. (Original post by ThEStArE)
I think i wrote small surface area to volume ratio!!!! i was rushing and wasn't thinking and when i saw the word small eggs it made me write down small AHHH haha only 1 mark, i got the second mark but that's pretty stupid thing to do :P
That's what I did. Little time left = Pressure = Brain going to mush.

Overall, it wasn't that bad. A few tricky questions, but other than that, it was fine; certainly better than previous papers.

What did people for why synthetic EPO increases blood pressure/ causes high blood pressure?
6. (Original post by TlanTlan)
1 cell > 2 cells > 4 cells > 8 cells.

3 cell cycles.
I got 744 minutes or something like that.

I got 55.56% for the other calculation.
7. (Original post by mike2niner4)
Also, what did you all get for the question where you had to fill in the number of bases in the table??
The number of Cs on strand A was equal to the number of Gs on strand B, and vice versa, same with As and Ts.
8. (Original post by swiftylol)
Didnt the question say one cell cycle = 4hrs18min

work out 8 cell cylcles?

I did 4hrs = 240mins

+ 18 mins

x 8

Maybe I misred the question, I was in a rush :s
yeah you did i think, i think it said to work out how long it would take to produce 8 cells
9. (Original post by TlanTlan)
1 cell &gt; 2 cells &gt; 4 cells &gt; 8 cells.

3 cell cycles.
10. (Original post by tina_1517)
ahh i got 1032 for the minutes for the 8 cell thing but converted it to hours so got 17 hours 12 minutes for my overall answer damn! should've read the q ..
I think 1032 is incorrect anyway? So I guess it doesn't really make a difference.
11. What was the answer to the question which said to suggest how scientists could measure the normal EPO levels?

Grade boundaries will probably be average - about 56/85 for an A.
12. (Original post by Limitless)
I got 744 minutes or something like that.

I got 55.56% for the other calculation.
Yay same as me (Well 774 if that's what you meant, lol)
13. (Original post by beelz)
What was the answer to the question which said to suggest how scientists could measure the normal EPO levels?

Grade boundaries will probably be average - about 56/85 for an A.
Take blood samples of healthy people, and create an average conc of EPO in their blood?
14. (Original post by liviaaa)
Yay same as me (Well 774 if that's what you meant, lol)
Yeah I got the egg question wrong though. I wrote about water potential.
15. Hi guys..
What did you put for the question asking about why she used 10 leaves instead of one...
And also the specifics behind the answer of how scientists could establish a normal EPO concentration in the blood? cheers
16. (Original post by Rahul.S)
thts 6 marks so far.....wt did u write my the syntetic EPO will cause red blood cells to increase...i said its made for the original EPO and its in solution...so can get taken in. etc.
The EPO will causes the amount of haemoglobin to increase, as EPO causes an increase in red blood cells, and so the more red blood cells, the more haemoglobin.
17. (Original post by liviaaa)
Take blood samples of healthy people, and create an average conc of EPO in their blood?
Yeah i wrote create average, then compare with the other
I got the frog thing wrong, totally! Forgot about SA:V ratio.
Got 9 for the amino acids? I think..
then the second part i wrote about introns and multiple repeats which im not sure is correct
18. (Original post by liviaaa)
Take blood samples of healthy people, and create an average conc of EPO in their blood?
I got this :3, wasn't too sure though! It was just a guess
19. Yes introns were correct
20. (Original post by Fletcher94)
Hi guys..
What did you put for the question asking about why she used 10 leaves instead of one...
And also the specifics behind the answer of how scientists could establish a normal EPO concentration in the blood? cheers
I put she measured in milli(whatever it was) as this increased prescision, so she was able to compare against the 10 leaves. Think that's wrong though.

I put take a blood samples from normal people and measure the amount of EPO in their blood, make an average from these people.

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