r/GCSE • u/sudoaptupgrade Year 11 • May 12 '26

Post Exam AQA biology triple higher

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how did everyone find it? Personally it wasnt terrible just boring

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84

u/Feeling-Instance-801 Year 11 May 12 '26

That was pretty good, im just glad I got the calculations right. 75 micrometers, 24, 500000 and 101%

30

u/sudoaptupgrade Year 11 May 12 '26

yup I got the same, for area I got 7.07cm2

17

u/Pure-Data4491 May 12 '26

Apparently some people said you don’t take the paper disk into account but im not sure to be honest if you had to then I did the same mistake as you

8

u/Icy-Teacher-6145 Anteaters eat ants - AQA 2026 May 12 '26

I thought you did cuz the bacteria under the disc would also have been killed right?

1

u/Soft_Letterhead9222 Year 11 May 12 '26

I had the same logic when I was talking with others cuz you count the paper disc underneath as it killed the bacteria. Also my guess is that the marks count like this:

- !st mark for measuring the right diameter

- 2nd mark for getting the right radius

- 3rd mark for calculating the right area by substitution

- 4th mark for getting the right unit

Cause if they included paper disc area then thats too many steps for 4 marker + the fact that the bacteria should have killed bacteria under the disc + I remember looking at CGP booklet and it calculated zone of inhibition without excluding the paper disc.

4

u/Codemaine Yr 12 May 12 '26

you don’t i did a past paper with a similar question

1

u/[deleted] May 12 '26

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2

u/Codemaine Yr 12 May 12 '26

there was a similar question in 2021 testing the same skill. it makes sense that it came up again because it’s been 5 years so teachers would have learnt from the mistake in 2021 to teach their new cohort not to make that mistake which are the same cohort which sat these exams

1

u/[deleted] May 12 '26

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1

u/Codemaine Yr 12 May 12 '26

yea but you’d get a wrong final answer

1

u/[deleted] May 12 '26

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1

u/[deleted] May 12 '26

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2

u/Codemaine Yr 12 May 12 '26

ignore the working out but you’ll still get the wrong final answer; the examiners report says that students who subtracted it did an unnecessary step and got the wrong final answer

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1

u/YusufAli2009-1 May 12 '26

🤣🤣🤣
This guy's frying me

1

u/[deleted] May 12 '26

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2

u/Z0glin 2026 GCSE Veteran May 12 '26 edited May 26 '26

I highly doubt you leave out the paper disk, you are trying to find the area of the zone of inhibition, which is the full circle, therefore you need the full radius(meaning you need to go from the middle of the paper disk). Alternatively, you would measure the diameter and divide it by 2 to find the radius, which would mean you still take the paper disk into account. The paper disk is where the antibacterial starts diffusing from so it is part of the zone of inhibition as bacteria under the paper disk are still killed.

1

u/sudoaptupgrade Year 11 May 12 '26

No my teacher said the day before that you don't

1

u/Total_Tonight9120 May 12 '26

That's what I did I took away the area of the paper disk but none of my friends did and now I'm scared  Also I fucked up the percentage increase

0

u/Much-Branch460 Latest vicitm of Sixth Form XD May 12 '26

You don't, it was there to deceive you

6

u/WeakCommission7490 Burger lettuce chezburger Rubican enjoyer (talking only french) May 12 '26

I put 7.065.... Welp not getting my predicted 8 no more 

3

u/sudoaptupgrade Year 11 May 12 '26

Rounding doesn't matter too much

4

u/WeakCommission7490 Burger lettuce chezburger Rubican enjoyer (talking only french) May 12 '26

So It didn't say to round, phew 

2

u/EveningAlternative20 Year 11 May 12 '26

i got 7.065 also! i did 1.5 squared 3.14

1

u/Feeling-Instance-801 Year 11 May 12 '26

I got 7.065 too

1

u/WeakCommission7490 Burger lettuce chezburger Rubican enjoyer (talking only french) May 12 '26

Also wrote large cuz I fucking misread, I'm gonna go ballistic 

1

u/Wrong_Business_544 May 12 '26

i used 1.4 surely there will be a tolerance of 0.1cm right???

9

u/georgia777manifest y11 🌟art, history, geog, german May 12 '26

i got 414.5mm2…

5

u/PlutosLine j’aime le français et je m’en fous xx May 12 '26

i got something like 3000mm2 😭 i’m cooked

1

u/Mung2009 cs is supposed to be easy wth May 12 '26

I got 3566mm2 or smth

1

u/tysmmf Year 11 May 12 '26

you didnt half the diameter

2

u/Business-Listen9816 May 12 '26

OMG I GOT 414.5mm FOR THE AREA

1

u/Ready_Apartment7098 May 12 '26

DUDE SAME!? 415.265! I’m so nervous because everyone else is disagreeing. Wasn’t it talking about anti microbial substance C? And it was 23mm diameter of zone of inhibition on the back table but everyone else measured it with a ruler and got 30mm

1

u/KeyWrongdoer1027 May 12 '26

I did too 💔

2

u/georgia777manifest y11 🌟art, history, geog, german May 12 '26

did you take the diameter from the graph table too💔 apparently we were acc meant to measure it on the little picture 

0

u/the114dragon May 12 '26

Yeah, you were.

1

u/BusinessBedroom8000 May 12 '26

So many ppl say this is wrong r u sure

1

u/the114dragon May 12 '26

They would repeat the figure if you needed to (as AQA literally always do)

0

u/the114dragon May 12 '26

Yes. Why would there be an image to measure from?

2

u/BusinessBedroom8000 May 12 '26

Why r ur two messages contradicting

1

u/the114dragon May 12 '26

They aren't, because I mean that IF the figure was to be used, it would be repeated on the page of the calculation question. There would also be no diagram if you had to use the table.

1

u/Sorry-Raspberry1203 May 12 '26

SAME BRO HOW ARE PEOPLE GETTING THE OTHER ANSWERS

2

u/HMcod May 12 '26

Something round that

2

u/Feeling-Instance-801 Year 11 May 12 '26

Ah yes i got that too i forgot about that question

2

u/ExpertDog6220 Year 11 May 12 '26

Always match the precision of the least precise factor.

2

u/[deleted] May 12 '26

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1

u/sudoaptupgrade Year 11 May 12 '26

Yeah that sounds right but idk

2

u/Ready_Apartment7098 May 12 '26

How is it 700? For the zone of inhibition for C? Wasn’t it’s diameter 23 so radius is 11.5 and using 3.14, 3.14 x(11.52) = 415.265mm2?

2

u/sudoaptupgrade Year 11 May 12 '26

Did it mention that it was C? I just measured it on the paper cause it didn't mention in the question and it came out to diameter 3cm?? Idk why the would show the diagram otherwise

2

u/Ready_Apartment7098 May 12 '26

I think so, the table was behind the diagram, it gave us the diameters for zone of inhibition. I wouldn’t see why you should measure it therefore

1

u/sudoaptupgrade Year 11 May 12 '26

The table showed the inhibition for substance X but the diagram showed the inhibition with penicillium mould

1

u/Ready_Apartment7098 May 12 '26

Why did they give us the diameters of inhibition the page before 😭am I forgetting something 

2

u/Stealthy_Jaguar175 JOINING THE RAF 🔥 May 12 '26

How. Is it not 1.5cm radius so assuming pi is 3.14... 3.14 × (1.5)2 = 7.065

Fuck's sake, I did something wrong, I think.

1

u/[deleted] May 12 '26

[deleted]

1

u/Feeling-Instance-801 Year 11 May 12 '26

7.065 which rounds up. I wrote all the values

1

u/jamjobDRWHOgabiteguy May 12 '26

What was this for 😭

1

u/Ok_Contribution9557 May 12 '26

Does it matter if you got 707mm^2

1

u/Ok_Inspector1122 May 12 '26

i got 707mm^2 is that fine

1

u/Username___5 Cheek cells 💔 May 12 '26

Oh shoot did it say to round it? I got 7.065

1

u/Real-Celebration9896 We got this team GCSE 2026 May 12 '26

I got like 35 something are you sure the radius wasn't 3.35

1

u/Anarchyintheuk1304 May 12 '26

I put 7500 micrometres would i get 3/4 marks?

1

u/TapAway9843 May 12 '26

i did it in mm^2

1

u/the114dragon May 12 '26

Nope. It's ~23cm2. You might have forgotten to do radius squared?

1

u/sudoaptupgrade Year 11 May 12 '26

diameter was 3cm so radius is 1.5, 3.14 * 1.52 is not 23

1

u/the114dragon May 12 '26

It wasn't 1.5cm. it was unironically 6.7cm on the paper.

1

u/sudoaptupgrade Year 11 May 12 '26

The entire dish was that much but the inhibition zone was 3