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

Mode of action of enzymes — practice question

Glucose in urine may be identified by means of a biochemical test. If the end of a test strip coated with the enzyme glucose oxidase is placed into urine, the appearance of a blue colour shows that glucose is present. This test is dependable and can be done at home by people with diabetes. Which characteristic of the enzyme makes this test so dependable?

  • AIt is heat stable.
  • BIt is specific.
  • CIt lowers the activation energy of the reaction.
  • DIt only works at low pH range.

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