# AQA BIOL1 Biology Unit 1 Exam - 16th May 2011 watch

• View Poll Results: Are you resitting this unit?
YES!
54.92%
NO!
45.08%

1. (Original post by Stratos)
I'm starting my revision now...

I was wondering whether we would have to discuss cytokines for the humoral immunity. Or is that a step to high for AS?
too high for unit 1
2. (Original post by Stratos)
I'm starting my revision now...

I was wondering whether we would have to discuss cytokines for the humoral immunity. Or is that a step to high for AS?
Ctyokines stimulate B-Cells right?
My teacher didn't know what they were when I asked. =.=
3. can someone please explain to me the different measurements we need to know?
e.g. how many um and nm there are in 1 mm
4. Would just like to wish everyone luck for tomorrow, don't panic when they inevitably ask us something we haven't been taught as such- read the question and use the knowledge you do have!

This will be the 3rd time I've sat unit 1, 3rd time lucky eh?!
5. (Original post by DoaaK)
can someone please explain to me the different measurements we need to know?
e.g. how many um and nm there are in 1 mm
1 = 1km
1^-3 = 1mm
1^-6 =1um
1^19 =1nm
6. (Original post by whiskeyinthejar)
Would just like to wish everyone luck for tomorrow, don't panic when they inevitably ask us something we haven't been taught as such- read the question and use the knowledge you do have!

This will be the 3rd time I've sat unit 1, 3rd time lucky eh?!
Same here! Its annoying because its the easiest module yet I always end up doing worse than i thought :P
7. (Original post by RG1994)
1 = 1km
1^-3 = 1mm
1^-6 =1um
1^-9 =1nm
sorry mistake there
1^-9 =1nm
8. (Original post by RG1994)
sorry mistake there
1^-9 =1nm
thankyou
so do i basically just add 000 each time?

so 1000 um = 1mm?
9. what does everyone think the hardest topic is for Unit 1?
10. (Original post by liviaaa)
It moves from roothair cell, to xylem by osmosis. Up the xylem by cohesion-tension, cappilarity or root pressure. NOT active transport - that requires ATP, and the xylem is made from dead cells.

--

Anyway this is AQA unit 1, not OCR unit 2.
Its for unit 1 of OCR, not unit 2? And thanks
11. (Original post by DoaaK)
can someone please explain to me the different measurements we need to know?
e.g. how many um and nm there are in 1 mm
1mm = 1,000 micrometere
1mm = 1,000,000nm
12. (Original post by RG1994)
sorry mistake there
1^-9 =1nm
i think its 1=1m, not a km
13. (Original post by anna258)
what does everyone think the hardest topic is for Unit 1?
deffoooooo immunity!
14. i reckon digestive system, amino acids bonding, tests and structure of a protein will come up
15. (Original post by emmaaa65)
1mm = 1,000 micrometere
1mm = 1,000,000nm
thankyou
16. whats the chemical used for the buiret test? is it copper(II) sulfate? or am i thinking of benedicts?
17. (Original post by whiskeyinthejar)
Would just like to wish everyone luck for tomorrow, don't panic when they inevitably ask us something we haven't been taught as such- read the question and use the knowledge you do have!

This will be the 3rd time I've sat unit 1, 3rd time lucky eh?!
Sup 3rd time buddy. I just want an A in this
18. (Original post by emmaaa65)
whats the chemical used for the buiret test? is it copper(II) sulfate? or am i thinking of benedicts?
they both use copper (ii) sulphate
19. check this out for the HSW questions. It might help some of you
http://www.thestudentroom.co.uk/show...php?p=31420645
20. How's everyone feeling about it now ?

TSR Support Team

We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

This forum is supported by:
Updated: March 7, 2012
Today on TSR

### Are you living on a tight budget at uni?

From budgets to cutbacks...

### University open days

1. University of Cambridge
Wed, 26 Sep '18
2. Norwich University of the Arts
Fri, 28 Sep '18
3. Edge Hill University
Faculty of Health and Social Care Undergraduate
Sat, 29 Sep '18
Poll
Useful resources

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE