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OCR 21st Century Biology Breadth Exam 15th May 2018

Hey guys, how did you find today's biology exam if you were on OCR 21st c?

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Reply 1
Can you remember any questions you had on it? I had a biology mock today as well
Reply 2
There was a question on Darwin's theory, a question on resistance (like resistance to insecticides - caused by mutations) , there was a question on the brain - like different parts and what they do so cerebellum, cerebral cortex and brain stem. The last question was on common ancestors and evolution.
Hey, I found it good. Hoping for 75-81.

Some questions:
1) Was the auxin diagram question B or C?
2) What did you get for the fill in gaps for the protein synthesis?
3) Did you get diagram 2 for the last one; the one with common ancestor not having the non-tasting variant?
4) What did you put for the dimples one?
Reply 4
BI cant rememberYES3/4
Reply 5
Original post by thekidwhogames
Hey, I found it good. Hoping for 75-81.

Some questions:
1) Was the auxin diagram question B or C?
2) What did you get for the fill in gaps for the protein synthesis?
3) Did you get diagram 2 for the last one; the one with common ancestor not having the non-tasting variant?
4) What did you put for the dimples one?


B
cant remember
YES
3/4
Reply 6
What did you get for the order of the letters on the brain question?
I put
c
b
a
Original post by SERYSERH
B
cant remember
YES
3/4


I mean the one suggesting why it's "irregular".
Also what did you put for the damp conditions woodlice and how to measure them?
For the brain:
The one about intelligence = cerebral cortex, the one about movement was cerebellum and last was brain stem
Reply 8
Original post by thekidwhogames
I mean the one suggesting why it's "irregular".
Also what did you put for the damp conditions woodlice and how to measure them?
For the brain:
The one about intelligence = cerebral cortex, the one about movement was cerebellum and last was brain stem


The woodlice one was because they are decomposers. So they need water, annoyingly I didn't put that but I literally regretted straight after the exam. Yeah I'm aiming for like 76+ as well
Reply 9
Original post by SERYSERH
What did you get for the order of the letters on the brain question?
I put
c
b
a


I'm pretty sure they were asking for the names not letters, i put both (put letters in brackets) and I put A B C
Original post by peeked
The woodlice one was because they are decomposers. So they need water, annoyingly I didn't put that but I literally regretted straight after the exam. Yeah I'm aiming for like 76+ as well


I didn't know they were decomposers but thought of it in the exam. I said because damp places are rich in water content and oxygen which is needed by them.
2

Also, what did you write for:
1) Last question
2) Penultimate fill in gap of protein synthesis
3) Suggest why it's "irregular dominant"
4) The 2 practicals.
5) The first question on the observations of Dickens

What do you think a 9 is - everyone seems to have flopped it mainly.
You two shoudl make a unoffcial mark scheme
I feel like i flopped it
Also what do you think the grade boundaries will be?
Original post by SERYSERH
I feel like i flopped it


I think nearly everyone has so you'll be fine with the boundaries. I have a feeling high 60s may be enough for a solid 9. OCR usually has low boundaries - last year it was 60% for A* Physics and we are new spec, harder, teachers don't know anything, etc. so expect high 60s-75% max for a 9.
Original post by SERYSERH
Also what do you think the grade boundaries will be?


My gut feeling:
9 - 66/90
8 - 57/90
7 - 48/90
6 - 37/90
Reply 16
Original post by thekidwhogames
I didn't know they were decomposers but thought of it in the exam. I said because damp places are rich in water content and oxygen which is needed by them.
2

Also, what did you write for:
1) Last question
2) Penultimate fill in gap of protein synthesis
3) Suggest why it's "irregular dominant"
4) The 2 practicals.
5) The first question on the observations of Dickens

What do you think a 9 is - everyone seems to have flopped it mainly.


'Everyone seems to have flopped it mainly'?? Wow, I hope so, honestly man that makes me feel so much better, literally so many people in my school said it was easy so I was panicking that the grade boundaries are going to mental. Okay, so that's not too bad then.

1) Last question, I put explanation 2 because it shows they mutated differently which explains why the genes are different
2) I can't remember this 100%, I remember putting 'genetic variant' as the last answer
3) For one of the practicals (the woodlice one) I put use a quadrat etc, For the second one I described the practical where you get the plants and put foil on the tips or you can see how they grow by putting them in a box and then seeing which was they grow
4) That first question was worded really bad, I put Darwin looked at fossils and he looked at the last one which was like he looked at species or something and I put his theory was the theory of evolution but lots of my friends but theory of natural selection

I think a 9 will be like 85% max which will be like 77 marks however I think it will probably be like 72/74. Honestly though I'm not sure how everyone across the country did. Going by last years OCR 21st B paper an A* was only like 70% for some papers.
Reply 17
Original post by thekidwhogames
My gut feeling:
9 - 66/90
8 - 57/90
7 - 48/90
6 - 37/90


Actually these seem a lot more accurate, I would definitely agree with you here. These do seem pretty good. I hope I've got a 9 then :smile: Really want it in the sciences
Reply 18
Original post by thekidwhogames
I think nearly everyone has so you'll be fine with the boundaries. I have a feeling high 60s may be enough for a solid 9. OCR usually has low boundaries - last year it was 60% for A* Physics and we are new spec, harder, teachers don't know anything, etc. so expect high 60s-75% max for a 9.


True the boundaries were low last year and that was like when the spec was easier. Yeah I would say 80% is like an absolute maximum with it probably being like 70-75%
Original post by peeked
'Everyone seems to have flopped it mainly'?? Wow, I hope so, honestly man that makes me feel so much better, literally so many people in my school said it was easy so I was panicking that the grade boundaries are going to mental. Okay, so that's not too bad then.

1) Last question, I put explanation 2 because it shows they mutated differently which explains why the genes are different
2) I can't remember this 100%, I remember putting 'genetic variant' as the last answer
3) For one of the practicals (the woodlice one) I put use a quadrat etc, For the second one I described the practical where you get the plants and put foil on the tips or you can see how they grow by putting them in a box and then seeing which was they grow
4) That first question was worded really bad, I put Darwin looked at fossils and he looked at the last one which was like he looked at species or something and I put his theory was the theory of evolution but lots of my friends but theory of natural selection

I think a 9 will be like 85% max which will be like 77 marks however I think it will probably be like 72/74. Honestly though I'm not sure how everyone across the country did. Going by last years OCR 21st B paper an A* was only like 70% for some papers.


Everyone in my year said it was easy too then I discussed my answers with theirs and now they think they flopped and I too think I did relatively bad.

1) I put diagram 2. Since the DNA sequences differ, they may have the non-tasting variants due to mutations and not from the common ancestor and I elaborated.
2) Yeah, I talked about how parents could be heterzygous etc.
3) I did the recapture remark release but did the same for the seeds.
4) I said the fossils and organisms and the one about islands, I think.

85% is too high considernig howbad everyone did so I'm thinking maybe 67.

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