Biology A-Level
hydrogen ions and pH
What hydrogen ions and pH means in Biology A-Level, as defined for AQA.
Definition of hydrogen ions and pH
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Reference: AQA
Hydrogen ion concentration determines pH, and higher concentrations lower pH, altering ionic and hydrogen bonds in an enzyme's tertiary structure so the active site changes shape.
Topics that use hydrogen ions and pH
- Inorganic ions (AQA A-Level)
Related terms
- inorganic ions
- iron ions in haemoglobin
- sodium ions and co-transport
- tertiary structure and pH
- channel and carrier proteins
- ion properties
- phosphate ions
Using hydrogen ions and pH in the exam
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