Cambridge AS & A Level Biology
3.1Mode of action of enzymes
Mode of action of enzymes in Cambridge AS & A Level Biology: what the syllabus expects you to know, the learning objectives and how to practise.
Subtopic22 practice questions1 lesson
Learning objectives
What the syllabus expects you to be able to do.
- 3.1.1State that enzymes are globular proteins acting inside cells or secreted to act outside them.
- 3.1.2Explain enzyme action in terms of active site, enzyme-substrate complex, lower activation energy and specificity, including lock-and-key and induced fit.
- 3.1.3Investigate the progress of enzyme reactions by product formation (catalase) and substrate disappearance (amylase).
- 3.1.4Outline the use of a colorimeter to follow enzyme reactions that involve a colour change.
Lessons
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How enzymes work
35 min
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