Cells need information and chemistry
Cells need information and chemistry

Every living cell carries out many chemical reactions to release energy, build molecules, and stay alive. To do this, cells need DNA for instructions, proteins for jobs, and enzymes to control reaction speed.
Step-by-step lessons covering OCR GCSE Biology What happens in cells (and what do cells need)? for Foundation and Higher tier. Each lesson works through exam-style questions in the written papers format. Start with the foundational topics and build up to the higher-tier material.