In this video, we cover: - What enzymes are - How enzymes work - The difference between the lock and key model and the induced fit model Exam board specific info: AQA - Suitable for everyone IGCSE Edexcel - Suitable for everyone Edexcel - Suitable for everyone OCR 21st Century - Suitable for everyone OCR Gateway - Suitable for everyone CIE - Suitable for everyone Maths Playlist:    • GCSE Maths (9-1)   GCSE Chemistry playlist: https://www.youtube.com/watch?v=fN8kH9Vvqo0 GCSE Biology Playlist: https://www.youtube.com/watch?v=--dIBinUdeU GCSE Physics Playlist: https://www.youtube.com/watch?v=aHVJfRxeAxo