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PTECH Biochemistry QUESTION #3413
Question 1
A 'Buffer' is a substance that:
  • Increases the $pH$ of a solution
  • Decreases the $pH$ of a solution
  • Resists changes in $pH$✔️
  • Cleans the blood
Correct Answer Explanation
Buffers (like Bicarbonate) absorb or release $H^+$ ions to maintain stability.