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OCR A-level Biology A questions by topic

Our topic questions for OCR A-level Biology A (H420), sorted under the sections of OCR’s Biology A specification in the order it prints them. Every question is original, with a point-by-point mark scheme, and every set has a printable PDF.

Other specifications: AQA A-level Biology · Cambridge A-level Biology · Edexcel A-level Biology A · Edexcel A-level Biology B · every topic, by unit

85 topics

Module 1: Development of practical skills in biology

1.1 Practical skills assessed in a written examination50 questions3 topics
1.2 Practical skills assessed in the practical endorsementno questions yet

We have no topic questions for this section yet.

H020/H420 route map

Module 2: Foundations in biology

2.1.1 Cell structure74 questions4 topics
2.1.2 Biological molecules117 questions7 topics
2.1.3 Nucleotides and nucleic acids75 questions5 topics
2.1.4 Enzymes78 questions5 topics
2.1.5 Biological membranes60 questions4 topics
2.1.6 Cell division, cell diversity and cellular organisation106 questions6 topics

Module 3: Exchange and transport

3.1.1 Exchange surfaces59 questions3 topics
3.1.2 Transport in animals45 questions3 topics
3.1.3 Transport in plants86 questions5 topics

Module 4: Biodiversity, evolution and disease

4.1.1 Communicable diseases, disease prevention and the immune system200 questions11 topics
4.2.1 Biodiversity56 questions3 topics
4.2.2 Classification and evolution102 questions6 topics

Module 5: Communication, homeostasis and energy (A-level only)

5.1.1 Communication and homeostasis70 questions4 topics
5.1.2 Excretion as an example of homeostatic control64 questions4 topics
5.1.3 Neuronal communication75 questions4 topics
5.1.4 Hormonal communication67 questions4 topics
5.1.5 Plant and animal responses142 questions8 topics
5.2.1 Photosynthesis69 questions3 topics
5.2.2 Respiration48 questions3 topics

Module 6: Genetics, evolution and ecosystems (A-level only)

6.1.1 Cellular control98 questions6 topics
6.1.2 Patterns of inheritance139 questions8 topics
6.1.3 Manipulating genomes54 questions3 topics
6.2.1 Cloning and biotechnology84 questions5 topics
6.3.1 Ecosystems124 questions6 topics
6.3.2 Populations and sustainability93 questions5 topics

A topic is listed under every section its lesson teaches, so some appear more than once. The codes beside each one are the specification headings it covers in that section.

The sections and codes are OCR’s, so check the current specification when a mark depends on one. The H020/H420 route map lists every heading, with the lessons that teach it.