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AQA iGCSE Biology Paper 1

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Original post by Vapouriser
What did everyone put for the 5 marker with the quadrat and tide levels


Everyone around me was asking for extra paper and I have no idea why. Also, for the "what dangers on a coast line" question, I panicked and just wrote "drowning"
Original post by Vapouriser
It's 64% because you do 2.4/1.3 x 100 and then you get 164 so you subtract the 100% in order to get the percentage change


how many marks was it?
Hahaha I wrote something like tripping over a rock and falling into the sea
Original post by Vapouriser
What did everyone put for the 5 marker with the quadrat and tide levels


tape measure - transect
quadrants placed at random intervals along transect
identify seaweeds in each quadrat with guide
use ruler to measure length of seaweeds and take mean length
see how growth changes along transect
plot graph
Original post by JCwizard
how many marks was it?


3 marks
Original post by iwishicouldfly14
I did so much human biology revision and when it actually came to it, I had to make up the third function of the liver (and I'm too scared to check if it's correct or not).
The paper itself wasn't too hard, but I know half my answers are wrong.
I'm just hoping that paper 2 has a lot of human.


SAME my mind went completely blank!
Original post by notveryoriginal
It's one of those that's ridiculously simple but you just can't wrap your head around :':wink:
100/1.4 = about 71.5
71.5 X 2.3 = about 164
Minus the 100 and it's about 64 I think? Maybe?


I hope so thats what I got :smile:
Original post by ok123456
tape measure - transect
quadrants placed at random intervals along transect
identify seaweeds in each quadrat with guide
use ruler to measure length of seaweeds and take mean length
see how growth changes along transect
plot graph


Thanks I reckon I might've got a 2-3 marks there but I just hate quadrats and transects so didn't really know about them properly and didn't write about transects
will tobacco get me the mark for the carcinogen question or did i have to put tobacco smoke
What was the question after the one which was which era did the american and asian bears split?
Original post by herewegoloobylou
I did 2.3 - 1.4 = 0.9
0.9/2.3 x 100
= 39 to two sf


That would mean though that 2.3 is 39% more than 1.4 which is wrong because logically you know that double 1.4 is 2.8 and 2.3 is closer to 2.8 than 1.4 so it's clearly over 50%
Original post by JCwizard
will tobacco get me the mark for the carcinogen question or did i have to put tobacco smoke


Yeah course and it's only one mark
Original post by emunia123
What was the question after the one which was which era did the american and asian bears split?


what did you put for that question
Original post by notveryoriginal
It's one of those that's ridiculously simple but you just can't wrap your head around :'q
100/1.4 = about 71.5
71.5 X 2.3 = about 164
Minus the 100 and it's about 64 I think? Maybe?


The method I showed is correct, it's literally your method, but instead of putting it over 2.3, it's over 1.4. There's often a question like that and you still get a mark if you used the wrong denominator.
Original post by emunia123
What was the question after the one which was which era did the american and asian bears split?


Was that the one about why the number of giant pandas was decreasing
Original post by JCwizard
what did you put for that question


The Asian and American bear question? Or the next on?
Original post by Vapouriser
Was that the one about why the number of giant pandas was decreasing


It was that one.
Just to clear the air.. The answer to the length question is as follows

(2.3-1.4) / 1.4 = 0.64.....
ANS * 100 = 64% (2sf)
Original post by oscaroneil
second to last question was hard regarding comparing the snails in different environments.


that was easy, if you are finding that hard, i worry for you
Original post by notveryoriginal
2.3-1.4=0.9
100\2.3= 23 over 1000
23 over 1000 X 0.9 = 39 to 2 sig figs

Which is completely wrong I now realise


It was (0.9/1.4)*100

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