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Past papers, summary notes, factsheets and past exam questions by topic for AQA, CIE, Edexcel, OCR and WJEC Biology AS and A-Levels.
Revision for CAIE Biology IGCSE, including summary notes, exam questions by topic and videos for each module.
Revision for AQA Biology GCSE, including summary notes, exam questions by topic, flashcards, mind maps and videos for each module.
Edexcel Biology GCSE. Topic 1: Key Concepts in Biology. Notes. (Content in bold is for higher tier only) This work by PMT Education is licensed under CC BY-NC-ND 4.0. CONTENTS. 1.1 - Eukaryotic and Prokaryotic Cell Functions. 1.2 - Specialised Cells and their Functions. 1.3 - Microscopy. 1.4 - Size, Scale and Estimations.
The role of mitosis and the cell cycle is to produce identical daughter cells for growth and asexual reproduction of cells. All the cells produced by mitosis are genetically identical therefore mitosis does not give rise to genetic variation.
Respiration is a multi-step process, with each step controlled and catalysed by a specific intracellular enzyme. Both aerobic and anaerobic respiration yield ATP, which is used for metabolic reactions and generating heat. It has four stages: Glycolysis. Link Reaction.
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