Spec J247
Step-by-step OCR GCSE Biology lessons by topic, building up to exam-style questions. Start with the foundational topics and build up to the higher-tier material.
1 Cell level systems
1.1 Cell structures
1.2 What happens in cells (and what do cells need)?
1.3 Respiration
1.4 Photosynthesis
2 Scaling up
2.1 Supplying the cell
2.2 The challenges of size
3 Organism level systems
3.1 Coordination and control – the nervous system
3.2 Coordination and control – the endocrine system
3.3 Maintaining internal environments
4 Community level systems
4.1 Ecosystems
5 Genes, inheritance and selection
5.1 Inheritance
5.2 Natural selection and evolution
6 Global challenges
6.1 Monitoring and maintaining the environment
6.2 Feeding the human race
6.3 Monitoring and maintaining health
