This discussion is now closed.

Check out other Related discussions

OCR A-level Biology A Paper 3 - 18th June 2025 [Exam Chat]

Poll

How did your OCR A-level Biology A Paper 3 exam go today?

OCR A-Level Biology A Paper 3: Unified biology (H420/03) - Wednesday 18th June 2025 [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. :yy:

General Information
Date/Time: Wednesday 18th June 2025 AM
Length: 1h 30m

Good luck!

Click here to find exam discussions for other A-level subjects

Scroll to see replies

Unofficial Mark Scheme

Post the answers you remember after your exam — our AI assistant will use them to build a live Unofficial Mark Scheme, based on real student responses.

Watch this thread to be notified when it goes live.

Good luck!

Reply 1

middjj

anyone got predictions now after p1 and p2 heh

Reply 2

amxyys

Original post

by middjj

anyone got predictions now after p1 and p2 heh

im just going to base them off of the pmt predictions paper that didnt come up for p1 and p2 sooo lac operon, kidney, nitrogen cycle and definitely bio molecules because that didnt come up at all

Reply 3

ariellawatson

Original post

by amxyys

im just going to base them off of the pmt predictions paper that didnt come up for p1 and p2 sooo lac operon, kidney, nitrogen cycle and definitely bio molecules because that didnt come up at all

Is that what usually happens I was trying to look at past papers to see if that was the trend but it got a bit confusing

Reply 4

yoshinoya

people said questions from module 1 .
havent tried any past papers 3 yet.

Reply 5

fergus.lk

Original post

by amxyys

im just going to base them off of the pmt predictions paper that didnt come up for p1 and p2 sooo lac operon, kidney, nitrogen cycle and definitely bio molecules because that didnt come up at all

i actually hope so, i really need to bump my marks up in paper 3 after that wishy-washy paper 2. ocr give us proper core bio questions pls (the stuff i actually revised)

Reply 6

Lanadelslay_

maybe that nitrogen practical? the one with the DNA and heavy and light nitrogen. I saw quite a few prediciotns for that in paper 1 but it didnt come up so it might show up p3

Reply 7

mountaincloud

Did photosynthesis come up for paper 1?

Reply 8

mountaincloud

I feel like plant and animal responses will probably come up and homeostasis

(edited 10 months ago)

Reply 9

sxmqur10

Original post

by mountaincloud

Did photosynthesis come up for paper 1?

it was basically half the paper haha

Reply 10

xxxxxxxxxxdd

is there actually a trend between paper 1 and 2 for paper 3, whats the chance of say plant hormones coming up again

Reply 11

middjj

Original post

by sxmqur10

it was basically half the paper haha

huh wdym there was barely any

Reply 12

Tesiyi

nucelotides and nucleic acids hasn't came up yet, and semi conservative replication and protein synthesis hasn't been on in a while so it might be on p3

Reply 13

amxyys

Original post

by mountaincloud

I feel like plant and animal responses will probably come up and homeostasis

plant responses (hormones) came up in p1 so tropisms maybe

Reply 14

GabbyBr

Manipulating genomes hasn't come up this year and often comes up in paper 3, same with Communicable Diseases.
Anything on module 5 other then energy because it was non-existent (Homeostasis and Communication).
Nucleotides and Nucleic Acids, Hasn't come up this year or in recent years so is one to watch out for.
Those are the ones I'm focusing my revision on.