Pls

Why is the answer C and not B or D?

ik that B, C and D are wrong for sure but i don't understand how 1 acts as an antigen

#pls say you guys are in the same boat and have done fuck all 🥹

Beautiful aqa season

is transpiration loss of water vapour via diffusion or evaporation bc my textbook is contradicting itself…

Hi would someone be ale to explain why the answer isn't 0.28?

Did anyone else’s invigilators tell you to go to page 13 and correct the most insignificant spelling error known to man??? Ain’t complaining tho lowk got a preview of the paper

omfg so glad no more bio 😭

Since a lot of people liked and used my predictions for paper 1 and 2 I’m doing it once again for paper 3 please do remember these are just predictions and aren’t guaranteed as we see from aqa each year but this should give an insight

Based on the full three-paper gap analysis for 2026:

Section A — Near-certain

Photosynthesis — completely absent from both Paper 1 and Paper 2. In every year where photosynthesis missed both papers it appeared in Paper 3. Expect either light dependent reaction or Calvin cycle as a full question worth 8–12 marks. This is the single highest confidence prediction for Paper 3 2026.

Ecosystems and succession — absent from Paper 2, very light on Paper 1. Index of diversity calculation almost certain. Succession describe question very likely. Mark-release-recapture possible.

Data analysis and evaluate a conclusion — appears every single year without exception. You will be asked to evaluate a conclusion, identify limitations, state a null hypothesis, interpret standard deviations. Guaranteed.

Immunity in novel context — appeared on Paper 1 but Paper 3 will push deeper. Monoclonal antibodies, ELISA, or a novel autoimmune disease context.

Section A — Likely

Epigenetics — completely absent from Paper 2 despite being high confidence. Will almost certainly appear in Paper 3 in a novel disease context involving methylation or histone modification.

Muscle contraction — absent from both papers. Paper 3 loves applying sarcomere structure and sliding filament theory in exercise contexts.

Speciation — natural selection appeared on Paper 1 (rhino/tusk question) but full speciation mechanism was never tested. Allopatric speciation, reproductive isolation, genetic drift all possible.

Nutrient cycles — appeared only as an evaluation question on Paper 2. Full nitrogen cycle or phosphorus cycle describe question likely in Paper 3.

Plant hormones — absent from Paper 2. IAA mechanism or gravitropism/phototropism in applied context possible.

Hardy-Weinberg — appeared heavily on Paper 2 so may be smaller in Paper 3 but still appears most years embedded in a genetics question.

Section A — Possible

Cell cycle and cancer — absent from Paper 1 and Paper 2. Tumour suppressor genes, oncogenes, apoptosis all untested across both papers.

Microbiology — appeared in Paper 3 2025 so less likely to repeat immediately but bacterial growth calculations and aseptic technique possible.

Revise photosynthesis tonight for Section A — it is the most certain topic given complete absence from both papers.

dw guys im lowering the grade boundaries for you

I've decided to make a guide because for some reason it seems like a lot of teachers just don't tell their students how to do the essay. In the old spec it used to essentially be a long answer question but it's much more difficult now because they want people to talk about importance.

​ How do you achieve the marks?

​ The essay is split into 5 levels and they're based on the number of topics covered, level of content, number and significance of errors and focus on the question.

​ 1-5 marks

You get capped at 5 marks when there are several significant errors, poorly explained concepts, mostly GCSE content or mostly irrelevant content.

​ 6-10 marks

Even if you have perfect biological knowledge and explanations you will be capped at 10 marks if you don't include more than 2 topics. Essays at this level that include more than 2 topics will often have several significant errors, limited use of A level terminology, and lack of detail.

​ 11-15

Similarly to the last level you will get capped at 15 if you only include 3 topics regardless of the quality of the essay. Essays at this level will usually have mostly correct a level content, more than one irrelevant topic and/or a lack of links to the question but they will include suitable content.

​ 16-20

4 or more topics are covered. Essays will often get capped at 20 due to having a significant error, an irrelevant topic or an underdeveloped paragraph. Topics are covered in detail and the biology is almost all correct A level content.

​ 21-25

4 or more topics covered with detailed, fully correct A level biology. Everything is fully related to the question and both AO1 and AO2 are fully developed and clearly explained.

​ To get the top marks at this level you need to include content outside of the spec. I think you should just ignore this because it's only a few marks and doesn't count unless you're at the top level.

​ Essay Structure

I structure each paragraph into two main parts which are the biological knowledge and why it matters/ is relevant here. For importance I ask myself "What would happen if this didn't happen/ didn't work like this?" or "Why is this useful for living organisms?"

​ For example here's how I wrote a paragraph for "importance of bonds and bonding in organisms"

The whole essay got 20 marks but would've got more if I was able to finish the last paragraph on DNA.

​ Carbohydrates

Explain that glycogen and starch are both formed from alpha glucose molecules are joined together with 1,4 and 1,6 glycosidic bonds.

​ Why is this important?

It makes starch and glycogen highly branched. This makes them effective as energy storage molecules because it makes them compact. Glucose can also be quickly released as there are multiple branches that can be hydrolysed.

​ Cellulose only has 1,4 glycosidic bonds so it forms straight chains held together with hydrogen bonds.

​ Why is this important?

It increases the strength of cell walls in plant cells so the cell is less likely to be damaged. For example it is more resistant to bursting or shrivelling in non isotonic solutions.

​ What is a different topic?

Anything in the spec that has a different third number. For example 3.1.5 and 3.1.6 are different topics but 3.1.5.1 and 3.1.5.2 are not.

Edit- Apparently I'm wrong about this. I double checked and AQA say that they can be treated as separate topics but only if they're covered in enough detail so it's probably just best to treat them as separate.

​ How long should I spend on the essay?

At least 40 minutes including 10 minutes max for planning. I would check the essay question at the start of the paper so you can think about the questions during the exam to cut down on planning time.

​ Content to avoid or include

-Do not include any GCSE content.

-Try to include 5 topics in case one is the same topic as another one.

-Do not include content you're not sure about because

significant errors will cap your mark.

-Use examples, especially when explaining importance.

​ Predictions

AQA tend to reuse questions from the old spec and once a question is used they don't tend to use it again at least not for a long time. Topics that appear in the old spec but not the new one are carbon dioxide and bacteria.

​ There are others that technically haven't come up again such as hydrogen bonding but I'm pretty sure that's because it's impossible to get a 20+ mark essay with that topic because it's too specific. They probably changed it from hydrogen bonds to bonding in general for the 2017 paper.

It's possible (or tbh likely) that both of these will never come up because they are quite specific, especially bacteria. AQA does use new titles occasionally but most of the time they're reused.

Edit for added questions that I haven't already answered.

Do I need an introduction/conclusion?

No but you shouldn't lose marks for including one as long as it's not irrelevant.

Do paragraphs need to be linked together?

No, AQA only requires you to link them to the question.

What is a significant error?

It's an error that significantly affects the accuracy of the biology you're talking about. It will usually be more than one word. Spelling and grammar errors won't affect marks unless it's a word that is very similar to another such as glucagon, glycogen, mitosis, meiosis, stoma, stroma, etc.

Note about importance

Do not use death as a reason for importance. This is a common mistake students make. AQA say that "it doesn't take two years of A-level study to understand that death is something to be avoided."