Effect of Temperature and pH on enzyme activity from clairebloom
Science Bank 8: you just need Part 3 (from 9m 55s) – Enzymes – biological catalysts & factors affecting their rate:
Two videos on Enzymes – 4m 19s vid from GCSE Bitesize and 2m 48s from Clipbank video resources.
A simple animated tutorial from McGraw Hill Education on how enzymes work.
Mr W sings ‘Enzymes!’:
TEXTBOOK REVISION
IGCSE Biology: Coursebook, chapter 5, pp.39 – 44