Which of the following statements about enzymes and enzyme-catalyzed reactions is correct?
Enzymes increase the reaction rate by lowering the activation energy barrier of the reaction.
Competitive inhibitors bind to an allosteric site on the enzyme, reducing its catalytic activity.
At very high substrate concentrations, the rate of reaction continues to increase proportionally with substrate concentration.
Enzymes are consumed during the catalyzed reaction and cannot be reused.
9 exam-style questions on OCR A A Level Biology Enzymes. Each one has a worked solution and a mark scheme showing where the marks go.