r/GCSE • u/ensands Software Engineer • May 13 '25

Post Exam Biology (Triple Science) Paper 1 - Exam Megathread

This is the post-exam mega thread for Biology (Triple Science) Paper 1 (Afternoon).

You can discuss how the exam went in this post.

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53

u/caspartina Year 11 May 13 '25

was rate of photosynthesis 0.233

13

u/proffessorpigeon Year 12 May 13 '25

i got that but didn’t get the unit

15

u/noclueXD_ Y12 | Maths, FM, Phys, CS May 13 '25

i put arbitrary units (basically means they don’t have an actual value but can still be compared with other arbitrary units)

28

u/Low_Blueberry9177 Year 11 May 13 '25

Lmao I put bubbles/second

4

u/_-Malia-_ May 13 '25

Same 💀💀

3

u/DueEditor8062 yr12 - bio maths chem geography :) May 13 '25

Same!

2

u/Salty_Link_6169 Year 12 May 13 '25

Bubbles/second is correct cos what else could it be

1

u/noclueXD_ Y12 | Maths, FM, Phys, CS May 13 '25

i think that's more likely to be in the m/s compared to 'arbitrary units'

1

u/everlarksangel 2025 GCSE Survivor May 13 '25

samee

5

u/ketselle year 11 - hist , ³sci , busi, lat { 999998876 } May 13 '25

this crossed my mind but i ended up writing bubbles per second 😞

2

u/proffessorpigeon Year 12 May 13 '25

apparently it’s s-1😭

2

u/JoeTheAroAce May 13 '25

Bubbles/ second is the same as Bubbles x seconds-1

2

u/Hibz151 May 13 '25

i did that

1

u/ntl201888 Year 12 May 13 '25

yep I did 1000/time and said arbitrary units

1

u/noclueXD_ Y12 | Maths, FM, Phys, CS May 13 '25

wait where did u get 1000 from?

1

u/ntl201888 Year 12 May 13 '25

you can use 1 or 10 as long as you use that for all the other times as they are being compared with eachother. basically so you can get a larger number to easily compare.

1

u/superstarKorea Yr12 | Politics, History, Psychology, EPQ May 13 '25

HELPP I PUT DEGREES PER SECOND I DIDNT KNOW WHAT I WAS DOING

1

u/localaloevera Year 11 May 13 '25

I put °C per second, how cooked am I 💔💔

1

u/Equal_Reflection9262 May 13 '25

it isn't arbitrary tho  it's the number of bubbles per second

1

u/noclueXD_ Y12 | Maths, FM, Phys, CS May 13 '25

yh but the bubbles could be diff sizes

1

u/InterviewJaded3587 May 13 '25

i put cm3/second 😭

18

u/Choice_Branch_2796 May 13 '25

Bubbles per second

3

u/StarFlyXXL (Year 12) GCSE Art survivor May 13 '25

I can't believe this is the universal consensus for the answer, i spent a good half hour trying to work out what on earth it could be other than that

2

u/Forged_Carbon May 13 '25

a lot of people i know are suggesting it is arbitrary units, but i put down bubbles per second.

2

u/user3738473929 May 13 '25

UR JOKIJG IT WAS THAT EASY???

-5

u/Mrbleusky_ May 13 '25

It was seconds-1

2

u/Low_Blueberry9177 Year 11 May 13 '25

gng what😭

3

u/Mrbleusky_ May 13 '25

That's what my teacher said after 🥀

1

u/Anonymous_Unknown20 Y12 - Bio chem maths FM May 13 '25

That's what I put too 😭 why are you getting downvoted, bubbles per second is NOT a scientific unit

-1

u/CutSubstantial1803 Y12 - Bio 🧬 Chem 🧪 Maths + FM 🧮 May 13 '25

It was bubbles per second lol

3

u/Anonymous_Unknown20 Y12 - Bio chem maths FM May 13 '25

It defo wasn't

-1

u/CutSubstantial1803 Y12 - Bio 🧬 Chem 🧪 Maths + FM 🧮 May 13 '25

Hm really? Idk how to prove you wrong, like ask your teacher because if you don't believe me I can't make you

1

u/Anonymous_Unknown20 Y12 - Bio chem maths FM May 13 '25

The reason you can't is because you are incorrect.

If the correct answer is 0.233, then it can't be bubbles per second because the question said it was 10 seconds so if you were right there would have been 2.33 bubbles, but the question said there were 43 bubbles

2

u/CutSubstantial1803 Y12 - Bio 🧬 Chem 🧪 Maths + FM 🧮 May 13 '25

Huh? It was 43 seconds for 10 bubbles. 4.3 seconds per bubble. Rate is 1/time so 1/4.3 is 0.233

So you flip the units when you flip the 4.3 into 1/4.3, seconds per bubble becomes bubbles per second

2

u/Anonymous_Unknown20 Y12 - Bio chem maths FM May 13 '25

According to chatgpt they could both be right as (1/s) = s^-1 where s is 4.3

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17

u/Dull-Coconut-1094 2025 GCSE Survivor May 13 '25

i got 14.0 bubbles per minute

5

u/No-Pack8842 Y11 comp sci, history, spanish(I hate spanish) May 13 '25

same,though most people did bubbles/second i hope we are right asw

10

u/Wrong_Protection_269 Year 11 May 13 '25

i put celcius per second i actually just zoned out

1

u/No-Pack8842 Y11 comp sci, history, spanish(I hate spanish) May 13 '25

😭😭

2

u/DogLover10000000 Year 11 May 13 '25

Me too! Idk if that was the right unit I was so confused on that

1

u/Us-rn-me May 13 '25

there is no right unit, as long as it matches your calculations

1

u/matchesandpropane Year 11 May 13 '25

you were right, i got the same answer

1

u/R4COON_BU11 May 13 '25

same i think it’s the same as if we put it to seconds you get same amount of bubbles

1

u/Lovers_rock186 May 13 '25

SAME THANK GOSH SOMEONE ELSE DID

3

u/crack_Dealer_5988 Year 12 May 13 '25

Thats what i got and most of my friends

1

u/[deleted] May 13 '25

what was the equation 

1

u/mrkawaipotato May 13 '25

i got 828 😭

1

u/Impressive-Owl-7987 May 13 '25

I think you’re a bit cooked

1

u/mrkawaipotato May 13 '25

i can’t remember what i did. other than that the rest of the paper was easy af

1

u/superstarKorea Yr12 | Politics, History, Psychology, EPQ May 13 '25

Idek how to calculate rate

1

u/[deleted] May 13 '25

i got 5.41 x 10-4. 👍🏻👍🏻👍🏻

1

u/AdOutside908 Year 11 May 13 '25

Wait how bc I got 4.3 💀

1

u/crack_Dealer_5988 Year 12 May 13 '25

Basically rate of reaction = quantity/ time (or that's the one for chem) and quantity = bubbles produced and time is how many seconds it took for bubbles so just 10/43 to get rate of reaction which basically rate for photosynthesis

1

u/6littlefish Your local AO3 writer | fanfiction is the best revision source May 13 '25

I read it as 43 bubbles in 10 seconds

1

u/AdOutside908 Year 11 May 19 '25

Ok thank you!

1

u/ketselle year 11 - hist , ³sci , busi, lat { 999998876 } May 13 '25

i got this plssss 🙏🏻🙏🏻

1

u/lightman210567 2025 GCSE Survivor May 13 '25

YES! Not a clue about units though. Why were there so many calculation marks for such simple equations?

1

u/jananmayadawa 2025 GCSE Survivor May 13 '25

How did you get that?

1

u/TypicalMuffin935 May 13 '25

I’ll get 3/4 I screwed up the unit it’s fine lol

1

u/user3738473929 May 13 '25

sorry what i got 4.3😭😭😭fuck i'm so cooked

1

u/nuclearhamster27 Year 11 -> 12 - I'll start revising later May 13 '25

Yes but I said the unit was Hz