Biology 5090 · O Level · Enzyme action

Enzyme action — practice question

(a)[5]

Explain the ‘lock and key’ hypothesis of enzyme action with a named example.

(b)[5]

Explain, with examples, why proteins are vital to all living organisms.

Worked solution & mark scheme

This 10-mark question has a full step-by-step worked solution and mark scheme. One marking point: “enzyme and a name, e.g. amylase” …