Biology A-Level
pH and active-site ionisation
What pH and active-site ionisation means in Biology A-Level, as defined for OCR.
Definition of pH and active-site ionisation
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Reference: OCR
pH affects the ionisation of amino acids in the active site; each enzyme has an optimum pH, and extremes alter charges and disrupt the active site, reducing activity.
Topics that use pH and active-site ionisation
- Enzymes (OCR A-Level)
Related terms
- Activation energy and enzyme–substrate complexes
- Cellular metabolism
- Coenzyme
- Cofactor
- Competitive inhibitors
- Digestion and absorption of products
- Effect of missing cofactors on reaction rate
- Effect of substrate concentration on inhibition
Using pH and active-site ionisation in the exam
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