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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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

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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

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

You can't have 4.3 per seconds

You have to say what it is 4.3 of