Heavy metal ions that act as inhibitors (mercury, silver and copper) break_in enzymes.
Correct answer: B. Disulphide bridges
- A. Peptide bonds
- B. Disulphide bridges
- C. Hydrogen bonds
- D. Ionic bonds
Explanation
Heavy metals bind to the thiol (-SH) group of amino acids and break the disulphide brides between the amino acids.
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Enzymes are biological catalysts that lower activation energy without being consumed, and their specificity is explained by the lock and key and induced fit models. Work includes the effects of temperature, pH and substrate concentration on reaction rate, plus competitive and non-competitive inhibition and how these differ.
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