CAIE IGCSE Biology EXTENDED 5.1.9 Effect of changes in pH on enzyme
CAIE IGCSE Biology EXTENDED 5.1.9 Effect of changes in pH on enzyme
Practise interpreting pH activity curves and explaining how pH changes alter active-site shape, substrate fit and denaturation.
How this is tested
- describe pH graphs by identifying the optimum and where percentage activity increases or decreases
- explain reduced rate at unsuitable pH using changed active-site shape and poorer substrate fit