Upcoming Edexcel AS Biology: Unit 2 exam on 26 May 2011

1 mark guys... :tongue:

(edited 12 years ago)

Reply 282

How about we all work together to think of all the 80 marks so we can estimate our marks and maybe grades?

Ok, where does mitosis occur Q = 1
Captive breeding/reintroduce = 7
Golgi apparatus/rER = 7
Difference between Golgi apparatus and rER = 3 ?
Telophase = 3 ?
Label 2 parts = 2
Domain = 2 ?
First Q - endemic = 2

... ah helppp!

ohh graph interpretation = 3
and some underneath Qs...?

Oh last 2 mark question on which one reliable
2 mark Q about overlapping results

-- 34

(edited 12 years ago)

Reply 283

zain6461

dog breeds p n q, dnt remember the marks
the behavioural mcq
then the first whole species question, guess that question was for 5
the blastocyst question
label n draw 2 in prokaryotic cell, 4 marks maybe
colour crossing over regions
taped lid, how to put in bacteria n 37 temperature, 3 separate questions

(edited 12 years ago)

Reply 284

Original post by zain6461

dog breeds p n q, dnt remember the marks
the behavioural mcq
then the first whole species question, guess that question was for 5

dog breeds = 6
Behavioural Q = 1 (ans sleeping in the day time or something?)
Yup included the endemic q

34 + 7 = 41 marks counted

I remeber the aseptic technique Q = 2/3 marks?
Why taped like this... 2 marks
37 temperature = 2 marks

the blastocyst question = 2 marks?
colour crossing over regions = 1 mark
---
Total 50/51

(edited 12 years ago)

Reply 285

888jamie888

To be fair, it was definitely labelled cell membrane not cell wall.

Reply 286

britchick

11

I know this site isn't based on UMS and how they're converted, but if you're looking for a rough estimation of what you needed for an A in this exam, for example, then this is a good site to use as a decent guideline:

http://www.conquercollege.com/gradecalc/index.php

For example, in the "Score" column, put your percentage for your coursework. Then in the second column, type 20% since the coursework is worth 20% of your overall grade.
Then if you know what you got in the Unit 1 exam in January, fill in the same detail on the row underneath i.e. percentage score of your UMS, then on the right column type 40%.

e.g. with mine
(coursework was 40/40): 100 --> 20
(Jan exam was 108/120): 90 --> 40

Then, scroll down and adjust the grade boundaries so that you can say A* = 90, A = 80 ... etc.

Then click "Calculate!" to see roughly what you needed for this exam percentage-wise to get the grade you want/need

e.g. with mine
A* = 85% (i.e. roughly 68/80)
A = 60% (i.e. roughly 48/60)
B = 35% (i.e. roughly 28/80)

i KNOW it works with percentages and not UMS but it you may find it helpful and may put your mind at ease :smile:

(edited 12 years ago)

Reply 287

Original post by jessica.thomas

Ah yes thank you I do now! :biggrin:

Was the answer stem cells for mitosis ???

Reply 288

ok it seems like everyone's arguing whether it was cell wall or slimy capsule !!
In the diagram it was clearly labelled as CELL MEMBRANE.. when we have to differentiate whether it is a slimy layer or cell wall, we have to count from the inside ALWAYS.
The inner membrane was labelled cell membrane, so therefore the outer membrane would be CELL WALL.. if it was slimy capsule there would be 3 membranes !

Reply 289

okay what did you guys do for the coloured thing.. i mean the colour of the chromosome after crossing over ???

Reply 290

Original post by Luckyk

Its ok stem cells is right the others were dead cells so mitosis couldnt occur

that feels good to hear :biggrin:

Reply 291

Charlesworth

Original post by aqua05

okay what did you guys do for the coloured thing.. i mean the colour of the chromosome after crossing over ???

Ended up looking like the top part :smile:

with only some of the top chromosome being switched colours

Reply 292

morton101

Original post by Charlesworth

Ended up looking like the top part :smile:

with only some of the top chromosome being switched colours

does it matter where we coloured in the chromatids??? i did mine on the bottom half??

was a good paper overall though i thought, was a bit too many higher mark questions for topics you couldn't really go into substantial detail about. Was way better than unit 1 anyway! :smile:

Reply 293

britchick

11

Original post by aqua05

ok it seems like everyone's arguing whether it was cell wall or slimy capsule !!
In the diagram it was clearly labelled as CELL MEMBRANE.. when we have to differentiate whether it is a slimy layer or cell wall, we have to count from the inside ALWAYS.
The inner membrane was labelled cell membrane, so therefore the outer membrane would be CELL WALL.. if it was slimy capsule there would be 3 membranes !

My theory precisely!

Reply 294

Original post by Charlesworth

Ended up looking like the top part :smile:

with only some of the top chromosome being switched colours

Oh, I ended up getting a strip of white on the left one and a strip of colour on the right one :/

Reply 295

Original post by britchick

I know this site isn't based on UMS and how they're converted, but if you're looking for a rough estimation of what you needed for an A in this exam, for example, then this is a good site to use as a decent guideline:

http://www.conquercollege.com/gradecalc/index.php

For example, in the "Score" column, put your percentage for your coursework. Then in the second column, type 20% since the coursework is worth 20% of your overall grade.
Then if you know what you got in the Unit 1 exam in January, fill in the same detail on the row underneath i.e. percentage score of your UMS, then on the right column type 40%.

e.g. with mine
(coursework was 40/40): 100 --> 20
(Jan exam was 108/120): 90 --> 40

Then, scroll down and adjust the grade boundaries so that you can say A* = 90, A = 80 ... etc.

Then click "Calculate!" to see roughly what you needed for this exam percentage-wise to get the grade you want/need

e.g. with mine
A* = 85% (i.e. roughly 68/80)
A = 60% (i.e. roughly 48/60)
B = 35% (i.e. roughly 28/80)

i KNOW it works with percentages and not UMS but it you may find it helpful and may put your mind at ease :smile:

your teachers told you your cwk mark?? my teachers refused to tell us as he said it can be changed a lot when moderated :frown:

Reply 296

snow leopard

OP

Original post by Cleoleo

your teachers told you your cwk mark?? my teachers refused to tell us as he said it can be changed a lot when moderated :frown:

Indeed, if the school's marking is off, moderators will lower everyone's mark accordingly, and unless you get individual results of each module in August, you'll never know about it. My bio teacher told us of how in one school each student lost 5 marks in Unit 3 (coursework).

Reply 297