# AQA Biology Unit 1 - Unofficial Mark scheme

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1. (Original post by EmmaC.)
which ones?
The mean that was 1.6 was only 1 mark. The why do more boys not drink alcohol was only 1 mark also. And the question about co2 increasing was 3 marks
2. (Original post by EmmaC.)
don't you mean 0.6 recurring % or 0.67%
3. (Original post by habeeb_00)
I got 0.666 whoops for the malaria one

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I got exatly the same as you. People are getting confused.

It was 300,000,000 divided by 100 and then times by 2,000,000 which comes out to 0.66 so 0.66%

1.6 wwas the synapse question
4. (Original post by Nathan Emmings)
What I think the Grade boundaries will be after some consideration and looking around at past reports ect ect..
13=D
20=C
28/29=B
37=A
48=A*
What are people thinking?
don't depend on those grades but they seem pretty accurate...
5. (Original post by Nathan Emmings)
What I think the Grade boundaries will be after some consideration and looking around at past reports ect ect..
13=D
20=C
28/29=B
37=A
48=A*
What are people thinking?
Like that, but the A* at 45 not 48. Because there will be some marks in that paper that very few people get.
6. (Original post by Nathan Emmings)
What I think the Grade boundaries will be after some consideration and looking around at past reports ect ect..
13=D
20=C
28/29=B
37=A
48=A*
What are people thinking?

Like that, but the A* at 45 not 48. Because there will be some marks in that paper that very few people get.
7. What did anyone get for the question about: the first statements is incorrect
And the statement was like: mosquito larvae are at the bottom of the food chain for fish
8. (Original post by Lgiff23)
What did anyone get for the question about: the first statements is incorrect
And the statement was like: mosquito larvae are at the bottom of the food chain for fish
Because the first step in the food chain is always a producer not a consumer.... Gotta be a plant in there somewhere
9. People keep looking fo answers when I offered to send an unofficial mark scheme (about 30 pages ago)

(Original post by Nik123Efimov)
Guys , I put a whole mark scheme together. If u want it send me a whatsapp or tweet me. +447712123002. Or @PlaysNik Btw check out #aqabiology
10. (Original post by Lgiff23)
What did anyone get for the question about: the first statements is incorrect
And the statement was like: mosquito larvae are at the bottom of the food chain for fish
i put something to do with them needing to eat plants and plants needing sun...
11. (Original post by mohamed2024)
they're species so it might be accepted
hopefully!
12. (Original post by Modern Sappho)
I believe the hypothesis was not valid as they only surveyed 100 or so people in one age group (15) so it was not representative and they therefore couldn't generalise but I could be wrong :/
sounds about right, i wish id put that but i think i wrote "girls drink alcohol as well" then at the end managed to scribble small sample size or something like that but who knows?
13. (Original post by Cirsium)
Because the first step in the food chain is always a producer not a consumer.... Gotta be a plant in there somewhere
don't forget the sun! ...
14. i got 80/60 x 100 = 1.6%
15. (Original post by Haashym)
15%
wrong 0.6%
16. Is Lichen wrong then for last question?
17. suprise me if the examiners can really mark the papers!!! When they don't put the right information in revsion text books #aqa #science #b1
18. (Original post by studentshavefun)
Is Lichen wrong then for last question?
I'm guessing so, since it isn't an animal. Didn't stop me from putting that down though 😂
19. (Original post by lokijij)
wrong 0.6%
Wrong 0.7% because 0.666 rounds to 0.7 not 0.6
20. (Original post by Georgiabennett)
suprise me if the examiners can really mark the papers!!! When they don't put the right information in revsion text books #aqa #science #b1
The only thing I can think of that isn't referenced in the spec anyway is the independent company question, which given you should know the meaning of the word independent (e.g. independent variable, independent event) could even be said to be in there at a stretch. Nobody's gonna have any trouble marking this paper.

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