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OCR A-Level Biology B, memorised fast.

Long notes are boring. Brain-hack the whole H422 specification with active recall and actually remember it.

  • Spec H422
  • 35 topics
  • 189 subtopics
See how it works£5/month

What OCR A-Level Biology B covers

OCR A-Level Biology B, Advancing Biology (specification H422), teaches biology through applied and medical contexts — blood smears and haemocytometers, monitoring heart function, assisted reproduction, diabetes management, dialysis. It is three written papers plus a reported practical endorsement: Fundamentals of Biology at 41%, Scientific Literacy in Biology at 37% and Practical Skills in Biology at 22%. All three can draw on any of the five teaching modules. **This specification is being withdrawn: the final first teach was September 2026 and the final assessment is summer 2028, with no resit opportunity.**

Cambridge OCR Level 3 Advanced GCE in Biology B (Advancing Biology) H422, version 3.2. Withdrawn: final assessment summer 2028, no resit. Read the OCR specification ↗

How it is assessed

Component 01

Fundamentals of biology

  • The Developing Cell: Cell Division and Cell Differentiation
  • The Developing Individual: Meiosis, Growth and Development
  • The Development of Species: Evolution and Classification
  • Cells and Microscopy
  • Water and Its Importance in Plants and Animals
  • Proteins and Enzymes
  • Nucleic Acids
  • Patterns of Inheritance
  • Population Genetics and Epigenetics
  • Gene Technologies
  • The Principles and Importance of Homeostasis
  • The Hormonal Control of Blood Glucose and the Management of Diabetes
  • Kidney Functions and Malfunctions
  • The Cellular Basis of Cancer and Treatment
  • Respiratory Diseases and Treatment
  • Cellular Respiration
  • Metabolism and Exercise
  • Pathogenic Microorganisms
  • The Immune System
  • Controlling Communicable Diseases
  • Photosynthesis, Food Production and Management of the Environment
  • The Impact of Population Increase
  • Planning and Implementing Practical Work
  • Analysing and Evaluating Practical Results
  • Practical Skills, Apparatus and Techniques
  • Fertility and Assisted Reproduction
  • The Effects of Ageing on the Reproductive System
  • Plant Reproduction
  • The Nervous System and the Identification and Consequences of Damage
  • Monitoring Visual Function
  • The Effect of Ageing on the Nervous System
  • The Heart and Monitoring Heart Function
  • Transport Systems in Mammals
  • Gas Exchange in Mammals and Plants
  • Transport Systems in Plants

2 hours 15 minutes110 marks41%

Component 02

Scientific literacy in biology

  • The Developing Cell: Cell Division and Cell Differentiation
  • The Developing Individual: Meiosis, Growth and Development
  • The Development of Species: Evolution and Classification
  • Cells and Microscopy
  • Water and Its Importance in Plants and Animals
  • Proteins and Enzymes
  • Nucleic Acids
  • Patterns of Inheritance
  • Population Genetics and Epigenetics
  • Gene Technologies
  • The Principles and Importance of Homeostasis
  • The Hormonal Control of Blood Glucose and the Management of Diabetes
  • Kidney Functions and Malfunctions
  • The Cellular Basis of Cancer and Treatment
  • Respiratory Diseases and Treatment
  • Cellular Respiration
  • Metabolism and Exercise
  • Pathogenic Microorganisms
  • The Immune System
  • Controlling Communicable Diseases
  • Photosynthesis, Food Production and Management of the Environment
  • The Impact of Population Increase
  • Planning and Implementing Practical Work
  • Analysing and Evaluating Practical Results
  • Practical Skills, Apparatus and Techniques
  • Fertility and Assisted Reproduction
  • The Effects of Ageing on the Reproductive System
  • Plant Reproduction
  • The Nervous System and the Identification and Consequences of Damage
  • Monitoring Visual Function
  • The Effect of Ageing on the Nervous System
  • The Heart and Monitoring Heart Function
  • Transport Systems in Mammals
  • Gas Exchange in Mammals and Plants
  • Transport Systems in Plants

2 hours 15 minutes100 marks37%

Component 03

Practical skills in biology

  • The Developing Cell: Cell Division and Cell Differentiation
  • The Developing Individual: Meiosis, Growth and Development
  • The Development of Species: Evolution and Classification
  • Cells and Microscopy
  • Water and Its Importance in Plants and Animals
  • Proteins and Enzymes
  • Nucleic Acids
  • Patterns of Inheritance
  • Population Genetics and Epigenetics
  • Gene Technologies
  • The Principles and Importance of Homeostasis
  • The Hormonal Control of Blood Glucose and the Management of Diabetes
  • Kidney Functions and Malfunctions
  • The Cellular Basis of Cancer and Treatment
  • Respiratory Diseases and Treatment
  • Cellular Respiration
  • Metabolism and Exercise
  • Pathogenic Microorganisms
  • The Immune System
  • Controlling Communicable Diseases
  • Photosynthesis, Food Production and Management of the Environment
  • The Impact of Population Increase
  • Planning and Implementing Practical Work
  • Analysing and Evaluating Practical Results
  • Practical Skills, Apparatus and Techniques
  • Fertility and Assisted Reproduction
  • The Effects of Ageing on the Reproductive System
  • Plant Reproduction
  • The Nervous System and the Identification and Consequences of Damage
  • Monitoring Visual Function
  • The Effect of Ageing on the Nervous System
  • The Heart and Monitoring Heart Function
  • Transport Systems in Mammals
  • Gas Exchange in Mammals and Plants
  • Transport Systems in Plants

1 hour 30 minutes60 marks22%

The full specification

35 topics, 189 subtopics. Open any topic to see what is inside it.

01The Developing Cell: Cell Division and Cell Differentiation3 subtopics
02The Developing Individual: Meiosis, Growth and Development5 subtopics
03The Development of Species: Evolution and Classification6 subtopics
04Cells and Microscopy11 subtopics
05Water and Its Importance in Plants and Animals5 subtopics
06Proteins and Enzymes6 subtopics

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

Name the phases of interphase in order, state what happens to each chromosome in S phase, and define cytokinesis.

Process

Describe what happens to the chromosomes during mitosis and how they are made visible in a root tip squash.

Process

What happens to a cell, from the first visible changes to its removal, once apoptosis has been triggered?

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

See a huge jump in your memorisation

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

The Developing Cell: Cell Division and Cell Differentiation
The Developing Individual: Meiosis, Growth and Development
The Development of Species: Evolution and Classification
Cells and Microscopy

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.

measles and .
tuberculosismalariacholera

Blank Blitz consolidates the facts

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

ABrain tissue is metabolically expensive.
BA high-quality diet is needed to sustain it.
CThe large head makes birth difficult.

Build It trains answer structure

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

Core body temperature is normally about 37 °C.
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 B revision questions

Common questions about revising OCR A-Level Biology B. Tap any to open it.

How do you memorise OCR A-Level Biology B?

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 35 Biology B topics and brings each one back on a spaced schedule so it stays memorised.

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

Skip the long notes and go straight to retrieval. Levo turns the H422 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 A-Level Biology B (H422)?

There are 35 topics, split across 189 subtopics, from The Developing Cell: Cell Division and Cell Differentiation, The Developing Individual: Meiosis, Growth and Development, The Development of Species: Evolution and Classification and more. Every topic is listed above, and each one opens to the subtopics inside it.

What do you get inside Levo for Biology B?

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 B?

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 B specification?

Every topic on the H422 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 B 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 B, 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 monthSee how the method works

Or £46 a year, about £3.83 a month. Cancel anytime.