OCR GCSE Biology A Paper 3 (Higher) (J247/03) - 10th May 2024 [Exam Chat]

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How well did your OCR GCSE Biology A Paper 3 (Higher) (J247/03) exam go today?

OCR GCSE Biology A Paper 3 (Higher) (J247/03) - 10th May 2024 [Exam Chat]

Welcome to the exam discussion thread for this exam.
Introduce yourself! Let others know what you're aiming for in your exams, what you are struggling with in your revision or anything else.

Wishing you all the best of luck.

General Information
Date/Time: 10th May 2024 AM
Length: 1h 45m

Good luck!
Click here to find exam discussions for other GCSE subjects

(edited 1 year ago)

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Reply 1

username6923653

I'm aiming for a 9, struggling with application questions

is everyone ready???

Reply 2

Yogshy

Original post by crinkled

I'm aiming for a 9, struggling with application questions
is everyone ready???

I think so im ready, what do you exactly mean by application questions

Reply 3

graceke

does anyone have predictions I'm terrified I don't know mitosis or the cell cycle

Reply 4

username6617044

does anyone know what substance is used to control co2 level when examining effect of co2 on rate of photosynthesis. in starch tests and in the pondweed (e.g elodea) test.

Reply 5

Evil Homer

TSR Community Staff

How is everyone feeling for tomorrow? How are we spending this evening revising?

Reply 6

graceke

Original post by Evil Homer

How is everyone feeling for tomorrow? How are we spending this evening revising?

Watching Eurovision hahaha

Reply 7

toastpuppy

Original post by terumikami

does anyone know what substance is used to control co2 level when examining effect of co2 on rate of photosynthesis. in starch tests and in the pondweed (e.g elodea) test.

Do you mean the chemical used to absorb it so it's not a factor? If so I'm pretty sure it's sodium hydroxide, and the BBC website agrees

Reply 8

toastpuppy

Original post by crinkled

I'm aiming for a 9, struggling with application questions
is everyone ready???

Do you mean questions where we aren't explicitly taught the subject (it might be based on a new study, for example) but are expected to apply our own knowledge? If so, I don't think there's much more to do than seeing how it could link to what you know (e.g. in 2023 I believe there was a question about the permeability of a cell membrane or something like that) and switching on scientific thinking caps.
And good luck! Hoping everyone gets what they want (including me lol)

Reply 9

Yogshy

Original post by toastpuppy

Do you mean the chemical used to absorb it so it's not a factor? If so I'm pretty sure it's sodium hydroxide, and the BBC website agrees

I remember it being sodium hydrogencarbonate, but confirm with the textbook or with BBC bitesize

Reply 10

Yogshy

Original post by Evil Homer

How is everyone feeling for tomorrow? How are we spending this evening revising?

Doing at least two past papers today

Reply 11

toastpuppy

Original post by yogshy

I remember it being sodium hydrogencarbonate, but confirm with the textbook or with BBC bitesize

I agree if the poster is asking about testing for CO2 with sodium hydrogencarbonate, but I think sodium hydroxide is used to control the CO2 levels (by removing it). Not sure which is asked about though.

(edited 1 year ago)

Reply 12

zeesh08

Original post by Pwca

OCR GCSE Biology A Paper 3 (Higher) (J247/03) - 10th May 2024 [Exam Chat]
Welcome to the exam discussion thread for this exam.
Introduce yourself! Let others know what you're aiming for in your exams, what you are struggling with in your revision or anything else.
Wishing you all the best of luck.

General Information
Date/Time: 10th May 2024 AM
Length: 1h 45m
Good luck!
Click here to find exam discussions for other GCSE subjects

does anyone know why a central control system (ie a brain) is better than having it spread over the body? Also, does anyone know what kinds of questions could come up on contraception? Thanks.

Reply 13

zeesh08

Original post by toastpuppy

yeah I would say sodium hydrogen carbonate too but I was taught soda lime in school, however mark schemes don't seem to like that so I would go for sodium hydrogen carbonate

Reply 14

philippag1

Good luck everyone!! Not long now 😬

Reply 15

Yogshy

Original post by philippag1

Good luck everyone!! Not long now 😬

Good luck to u to man

Reply 16

toastpuppy

Original post by zeesh08

does anyone know why a central control system (ie a brain) is better than having it spread over the body? Also, does anyone know what kinds of questions could come up on contraception? Thanks.

No clue for the first question, but for contraception it's usually about the positive and negatives of hormonal vs non hormonal, or the specific hormones used and why. I also know questions asking you to critique natural conception have come up before. Also worth remembering condoms are the only which protect against STI/STDs.