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AQA BIOL5 Biology Unit 5 Exam - 22nd June 2011

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Original post by Flux_Pav

Original post by Flux_Pav
yeah!
for A* 120 right?


148 unfortunately!
Reply 1661
Any ideas of the essay questions going to come up
Original post by Sparkly-Star
An overall A - 480 UMS + a combined 90% from A2 modules is an A*. Dunno about her other modules but it could be possible.


she'd already had said her A2 modules, Unit 4~80 Unit 6~42

She needs 270/300 for A*, so far she has 122. Hence she'd need 270-122 = 148.

In Unit 5, total UMS available is 140. Hence impossible
Reply 1663
Original post by Zozza93
Thankyou for taking the time to write this for me! I have one question however..
You say the repeating sequences, does that mean that introns all have the same sequence, but just their position in everyone's DNA differs? Thanks!


I'm pretty sure introns can be both random non-coding sequences, or repeating sequences (and probably more variations we don't need to know :tongue:) and the repeating sequence can be any number of bases long, if I remember usually 3-5. And that there are lots of different sequences throughout the introns.

I'm not sure about position, I think position of the repeating sequences are the same, but the length of them are different, hence why you can compare between different people. Seems to make the most sense to me, but could be wrong so best if someone else could clarify :tongue:.
Original post by Tericon
Its always double the number of strands, so theres two strands in 1, so cycle 1 = 4, cycle 2 = 8, cycle 3 = 16, cycle 4 = 32, cycle 5 = 64, cycle 6 = 128.

My maths is a bit rusty, but I think thats square numbers.... :smile:


1 multiplied by 1 does not give 4.

Get the WD-40 out.
Reply 1665
Original post by Tericon
Can you work out my UMS needed please too? :smile:

I got 240 at AS (but have resat Unit 1...) 72/100 Unit 1 116/140 Unit 2 52/60 Unit 3

A2: Resat unit four again, but first time round I got 74/100

I reckon I'll have gained at least 10 UMS for unit 1, so that'll make it 82/100 ums for unit 1, and possibly 5 on unit 4 = 79/100.

So forgetting Unit 6, whats the max I need in this exam for an A overall?

(Could you calculate pre resits too as well as my resit estimates, just so i know the best and worst case scenairo)

Thank you :smile:


pre resit you need 166/200 UMS for an A from practical + Unit 5
best case - 155/200 UMS for an A from prac and Unit 5

:smile:
Reply 1666
Original post by HSG1992
1 multiplied by 1 does not give 4.

Get the WD-40 out.


.......no, but 2 x 2 does, theres two strands in each piece of DNA, it is double the number of strands each time.

so cycle 1 has two strands of DNA, so it is 2 x 2 = 4, cycle 2 = 4 x 2 = 8

My maths is not that rusty :tongue:
Reply 1667
Original post by HSG1992
1 multiplied by 1 does not give 4.

Get the WD-40 out.


Read their post again.. They said that because it has 2 strands, it would be 4.. thats because 2 x 2 = 4
Reply 1668
Original post by NRican
pre resit you need 166/200 UMS for an A from practical + Unit 5
best case - 155/200 UMS for an A from prac and Unit 5

:smile:


Thank you very much :smile:
after retakes i think im on Low A in bio 1, High B in bio 2 and A in bio 3

B in bio 4 and A*in bio 6 any rough ideas wat i need in bio 5 for A grade

much appreicated!!! Reps guna be given
Reply 1670
Original post by kingsmod1
after retakes i think im on Low A in bio 1, High B in bio 2 and A in bio 3

B in bio 4 and A*in bio 6 any rough ideas wat i need in bio 5 for A grade

much appreicated!!! Reps guna be given


To calculate that accurately we'd need your UMS scores
I made some notes on the genetic techniques bit - feel free to correct me if I'm wrong..

Spoiler

Reply 1672
Original post by kingsmod1
after retakes i think im on Low A in bio 1, High B in bio 2 and A in bio 3

B in bio 4 and A*in bio 6 any rough ideas wat i need in bio 5 for A grade

much appreicated!!! Reps guna be given


around 120 UMS
I'm going to revise DNA tech in a bit, one of the worst chapters. :frown:
Reply 1674
How are people revising for the essay part? Ive gone through some AS and unit 4 stuff but dont know what else to do :/ ???

Thanks :smile:
do we have to know about control of water potential e.g ADH?
Original post by Sparkly-Star

*Try to include something relevant outside the spec. I heard this is the way to get that extra edge
:


Hello :smile:

I don't suppose you could recommend how much out of spec stuff would be enough to impress the examiner? And also, is it enough to say e.g. 'i recently read an article in which it mentions GM of mosquitos to reduce maleria' or do they want more?
And also, can i say 'i recently read an article' or do i have to always speak in third person like in an english essay?
Original post by Sparkly-Star
I'm going to revise DNA tech in a bit, one of the worst chapters. :frown:


I hate that chapter so much.

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