AQA AS Unit 2 Biology Exam 1 June 2015

Original post by LucieTeresa

In each chapter there is a brief section on application and HSW, except variation.

It's the questions in the blue boxes rather than the red boxes in the text book, on page 133 there's a few. Just keep going through the book, and then do some past papers, if I can find anything online I'll send it to you as well :smile:

You're a star thank you so much xx

Reply 22

kkboyk

21

Original post by LucieTeresa

I'm exactly the same, I used to be much better on unit 2 though and now I feel like it's going to be unit 2 that pulls me down because I'm not getting much higher than a C... it's the whole plant thing that's my issue I think

What don't you get about the plant things?

Reply 23

skittles100

6

hii, can anyone help me on standard deviation overlap? how do you know say if it was 6+-9 if the results overlap? i get it if the lines meet they overlap on a graph but i dont know how you would work that out on a bar chart or using results like 32+-9?!

Reply 24

Abzz789

Do you think we need to know about Okazaki fragments? It's in a lot of the revision videos I've watched but not in the textbook

Reply 25

OP

Original post by Abzz789

Do you think we need to know about Okazaki fragments? It's in a lot of the revision videos I've watched but not in the textbook

I have never even heard of them... my teacher hasn't gone over it with us, I don't think it's on the spec, I'll check

Reply 26

kkboyk

21

Original post by skittles100

hii, can anyone help me on standard deviation overlap? how do you know say if it was 6+-9 if the results overlap? i get it if the lines meet they overlap on a graph but i dont know how you would work that out on a bar chart or using results like 32+-9?!

Add or subtract the value for each group and compare to see if there's any overlap whatsoever.

E.g. lets say Group A has S.D 10±2, B has 9±1 and C has 20±7. What this mean is that group A can take a range of values from 8 to 12, group B can take a range from 8 to 10, and C from 13 to 27. Group A and B has overlap, as they both take the values from 8 to 10, which means theres no signifcant difference between the two groups.

I hope this makes sense :colondollar:

(edited 8 years ago)

Reply 27

kkboyk

21

Original post by Abzz789

Do you think we need to know about Okazaki fragments? It's in a lot of the revision videos I've watched but not in the textbook

No, never heard of it and it isn't in the specs.

Reply 28

lyricalvibe

16

Original post by Whizbox

Unit two is known for having ridiculously low boundaries for full UMS, does anyone know why? I usually get full UMS in the past papers and I'm not even that good at Biology

More content and more application and to some harder to understand. Unit 1 boundaries are low themselves usually (~70% last year) so it makes sense unit 2 goes down to roughly 65%

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Reply 29

username1194172

predictions for the 6 mark question?

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Reply 30

ssn2125

What exactly do we need to know about cell differentiation and organisation? Do we have to know examples of organ systems and stuff like that?

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Reply 31

ssn2125

What exactly do we have to know about meiosis? Do we have to know about P1 M1 A1 T1 P2 M2 A1 T1 individually?

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Reply 32

OP

Original post by Louisss

predictions for the 6 mark question?

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Hopefully something on DNA as that seems to be my only strong point D: I've forgotten most of unit 2, especially tissue fluid, gas exchange and haemoglobin and oxygen dissociation curves

Reply 33

username1194172

Original post by LucieTeresa

Hopefully something on DNA as that seems to be my only strong point D: I've forgotten most of unit 2, especially tissue fluid, gas exchange and haemoglobin and oxygen dissociation curves

Yeah I hope so to but I'd be surprised as the 6 marker last year was on DNA

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Reply 34

OP

Original post by Louisss

Yeah I hope so to but I'd be surprised as the 6 marker last year was on DNA

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I know

just thinking about how close this exam is is scaring me

Reply 35

OP