GCSE Biology: Enzymes (Key Concepts, Practical Skills & Exam Practice) Revision Booklet
This resource is a GCSE Biology enzymes revision booklet designed to help students secure the key marks in the enzymes topic. It includes
Core knowledge and definitions (enzyme, substrate, active site, products, optimum, denature) and the lock-and-key model of specificity.
Clear explanations of factors affecting enzyme activity: temperature, pH, substrate concentration, and enzyme concentration.
A full Required Practical on the effect of pH on amylase using the iodine test, with equipment, method, variables, safety, reliability, results table template, and graph expectations.
Brief guidance on other common enzyme practicals (catalase with hydrogen peroxide, lipase with milk/indicator).
A 4-day 10-minute revision plan
Multiple-choice exam practice questions with answers.
A final checklist to check progress.





