OCR GCSE Biology A, memorised fast.

Long notes are boring. Brain-hack the whole J247 specification with active recall and actually remember it.

Spec J247
6 topics
65 subtopics

OCR GCSE Biology A J247

Cell Level Systems

Topic overview Microscopy, and sub-cellular structures DNA structure: polymer, double helix and nucleotides Protein synthesis and the triplet code Enzyme action, and investigating enzymes Cellular respiration as an exothermic process Aerobic and anaerobic respiration compared Synthesis and breakdown of carbohydrates, proteins and lipids Photosynthesis: producers and the process Photosynthesis as endothermic, and investigating it Limiting factors in photosynthesis

Community Level Systems

Topic overview Cycling materials, and the role of microorganisms The carbon and water cycles, and decomposition Levels of organisation, and abiotic and biotic factors Interdependence, competition and trophic levels Pyramids of biomass and the efficiency of transfer

Genes, Inheritance and Selection

Topic overview Genetic terms, and the genome Genome, environment and mutations How genetic variants influence phenotype Asexual and sexual reproduction compared Haploid, diploid and meiosis Single gene inheritance and Punnett squares Sex determination, multiple genes and Mendel's work Variation within a population, and classification Natural selection and evolution Evidence for evolution, and the work of Darwin and Wallace

Global Challenges

Topic overview Field investigations, and human impact on ecosystems Maintaining biodiversity, and evidence for environmental change Food security, agricultural and biotechnological solutions Selective breeding and genetic engineering Health, disease, and types of disease Interactions between diseases, and how they spread Reducing the spread of disease, and named examples Physical and chemical plant defences Detecting plant disease; white blood cells and platelets Non-specific defences and the immune system Monoclonal antibodies and their uses Vaccines, medicines and aseptic technique Developing new medicines, and non-communicable disease Treating cardiovascular disease, and lifestyle factors Cancer, and the use of stem cells in medicine Gene technology in medicine, and the human genome

Organism Level Systems

Topic overview The nervous system and coordinated responses The reflex arc The eye and its common defects The structure and function of the brain Investigating and treating the brain Hormonal coordination, thyroxine and adrenaline Hormones in reproduction and the menstrual cycle Contraception and treating infertility Plant hormones and their commercial uses Homeostasis, and the skin in temperature control Insulin and glucagon in blood sugar control Type 1 and type 2 diabetes Osmotic changes in body fluids, and the kidneys The kidney tubule and the effect of ADH Responding to temperature and osmotic challenges

Scaling Up

Topic overview Diffusion, osmosis and active transport Mitosis, the cell cycle and cell differentiation Stem cells in animals and meristems in plants Surface area to volume ratio and exchange surfaces The circulatory system, the heart and blood vessels Red blood cells and plasma Root hair cells, transpiration and translocation Xylem and phloem Factors affecting water uptake, and the potometer

What OCR GCSE Biology A covers

OCR GCSE Biology A (Gateway Science, specification J247) is one of the three separate sciences and is examined by two written papers of 1 hour 45 minutes and 90 marks each, worth 50% apiece. Paper 3 covers the first half of the topics and Paper 4 the second, with the first half assumed. This is the Higher tier: it carries everything on the Foundation papers plus the higher-tier content, and grades 4 to 9 are available, with an allowed grade 3 for a student who just misses grade 4.

OCR GCSE Biology A (Gateway Science) J247, version 4.0, August 2026. Read the OCR specification ↗

How it is assessed

Paper 3

Biology A Paper 3

Cell Level Systems
Organism Level Systems
Scaling Up

1 hour 45 minutes90 marks50%

Paper 4

Biology A Paper 4

Community Level Systems
Genes, Inheritance and Selection
Global Challenges

1 hour 45 minutes90 marks50%

The full specification

6 topics, 65 subtopics. Open any topic to see what is inside it.

01Cell Level Systems10 subtopicsOpen topic

02Community Level Systems5 subtopicsOpen topic

03Genes, Inheritance and Selection10 subtopicsOpen topic

04Global Challenges16 subtopicsOpen topic

05Organism Level Systems15 subtopicsOpen topic

06Scaling Up9 subtopicsOpen topic

How you work through it

Pick the mode that fits the time you have.

Try three questions

No account needed. Answer from memory first.

Your recallNot started

Process

Give the word equation for photosynthesis, say where the plant obtains each reactant, and describe its two stages in order.

Key term

Explain how enzyme activity changes as pH leaves the optimum, why extra substrate eventually stops raising the rate, and why extra enzyme raises it.

Key term

Explain why a DNA molecule is compared to a twisted ladder, what holds its two strands together, and why that structure is stable.

Spaced Repetition Schedule

How reviews are timed

Levo will automatically distribute all of your progress into a spaced repetition calendar. Once you’ve answered, it’s scheduled for you on the next day in the spaced repetition schedule. Over time, the gaps between your recall get bigger, from a day to three years, reinforcing memorisation over a long period of time.

Interval sequence

1 day
3 days
7 days
14 days
30 days
60 days
4 months
8 months
1 year
2 years
3 years

What is inside Levo

Six ways to work the same material

1Closed book

2Open book

3Closed book

The 3-step method, run for you

Answer cold, learn it, then prove it stuck. Levo tracks the jump between your first attempt and your last.

Cell Level Systems

Community Level Systems

Genes, Inheritance and Selection

Global Challenges

Cram a whole paper in one sitting

Sort every topic into what you know and what you do not, then drill only the weak ones.

Algae and .

phytoplanktonfungianimals

Blank Blitz makes facts automatic

Rapid timed gap-fills on the terms and numbers you need to recall without thinking.

AThe blood becomes too dilute.

BLess ADH is released.

CThe collecting ducts become less permeable.

Build It gets the exam shape right

Assemble a full-mark answer from its marking points, in the order an examiner wants them.

Egestion means passing out of undigested food as faeces.

TrueFalse

Test It catches misconceptions

Spot the fault in a statement. The traps are the mistakes students actually make.

721941163128510

Brain Breaks between sessions

Short focus games to reset attention, so the next set lands better than the last.

Biology A revision questions

Common questions about revising OCR GCSE Biology A. Tap any to open it.

How do you memorise OCR GCSE Biology A?

By testing yourself, not rereading. Active recall, pulling each answer from memory then checking it, builds far stronger memory than highlighting notes. Levo runs the method for you across all 6 Biology A topics and brings each one back on a spaced schedule so it stays memorised.

What is the fastest way to revise Biology A for OCR?

Skip the long notes and go straight to retrieval. Levo turns the J247 specification into short questions you drill with rapid recall, cram whole papers in one sitting, and a readiness score tells you exactly what is left to learn.

What topics are on OCR GCSE Biology A (J247)?

There are 6 topics, split across 65 subtopics, from Cell Level Systems, Community Level Systems, Genes, Inheritance and Selection and more. Every topic is listed above, and each one opens to the subtopics inside it.

What do you get inside Levo for Biology A?

Six ways to work the same material. The 3-step method for learning a set, Cram for sorting a whole paper into what you know and what you do not, Blank Blitz for making key facts automatic, Build It for assembling full-mark answers, Test It for catching misconceptions, and Brain Breaks between sessions. A readiness score tracks how much of the subject you have memorised.

Is active recall better than rereading your notes for Biology A?

Consistently, yes. Rereading feels productive but fades quickly. Retrieving an answer from memory, the way Levo tests you, is what actually forms durable memory, and it shows you honestly what you do and do not know.

Does Levo cover the whole OCR Biology A specification?

Every topic on the J247 specification is covered, written from the published subject content. The full list is above, and each topic opens to its subtopics so you can see exactly what is there before you subscribe.

How can you encourage your teenager to revise?

Make it short, structured and low-pressure. Levo gives a clear daily plan, quick sessions rather than marathon ones, streaks that reward showing up, and an honest readiness score, so revision feels like progress instead of a chore. Parents can add an account and follow along.

Can you revise Biology A the night before an exam?

Yes. Cram mode is built for exactly that: fly through a whole paper, sort every topic into red, amber and green, then drill just the reds and ambers you do not know yet. It is the honest version of a last-minute session.

Every question in Biology A, on a schedule.

Attempt a question from memory, write the correct version, then attempt it again. Levo records the jump between your first attempt and your last, and brings each question back on the day you are due to forget it.

Start revising, £5 a month See how the method works

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