Biology 9700 · AS & A Level · Mode of action of enzymes

Mode of action of enzymes — practice question

Proteases are a class of enzymes that break down proteins. Which statement about proteases is correct?

  • AA bacterial protease that is secreted from a disease-causing bacterium could act as an antigen and cause the production of an antibody.
  • BBacterial proteases are important in the nitrogen cycle as they are able to catalyse the breakdown of the organic nitrogen molecules nucleotides and urea.
  • CNon-competitive inhibition of a protease that has an optimum pH of $\text{pH }2$ can be overcome by increasing the substrate concentration and increasing the pH.
  • DWater molecules are required when peptide bonds that link the monomers together are broken by the action of proteases in condensation reactions.

Worked solution & mark scheme

This 1-mark question has a full step-by-step worked solution and mark scheme.

  • Full mark scheme, point by point
  • Step-by-step worked solution
  • Write your answer & get it marked instantly by AI