• views: 215
• date: 9 June 2026
• posted by: 0nelove

1. Describe a catalyst as a substance that increases the rate of a chemical reaction and is not changed by the reaction
2. Describe enzymes as proteins that are involved in all metabolic reactions, where they function as biological catalysts
3. Describe why enzymes are important in all living organisms in terms of a reaction rate necessary to sustain life
4. Describe enzyme action with reference to the shape of the active site of an enzyme being complementary to its substrate and the formation of products
5. Investigate and describe the effect of changes in temperature and pH on enzyme activity with reference to optimum temperature and denaturation
6. Explain enzyme action with reference to: active site, enzyme-substrate complex, substrate and product
7. Explain the specificity of enzymes in terms of the complementary shape and fit of the active site with the substrate
8. Explain the effect of changes in temperature on enzyme activity in terms of kinetic energy, shape and fit, frequency of effective collisions and denaturation
9. Explain the effect of changes in pH on enzyme activity in terms of shape and fit and denaturation
Requirements
Access to a device to watch lessons — phone, tablet, or computer No textbook needed — everything is covered in the course
Description
This Biology course is structured specifically around the latest Cambridge IGCSE and GCE Biology syllabus, ensuring complete and accurate coverage of every objective students need to master for their examinations. Students preparing for AP Biology, IB Biology, or equivalent international curricula will also find this course highly valuable for building a thorough understanding of the theory component of their exams, as the core biological concepts covered are closely aligned across these specifications.
The course focuses onUnit 5: Enzymes, one of the most important and most frequently examined units in the entire Biology course. Enzymes do not just appear in this unit — they show up in digestion, respiration, photosynthesis, DNA replication and biotechnology. Mastering this unit now means you are better prepared for every unit that follows.
Every syllabus objective is covered comprehensively, without overloading you with irrelevant material. The content is precise, focused, and directly aligned with what examiners expect — so you spend your time learning exactly what matters and nothing that does not. Throughout every lesson, real past paper questions are used to show you how this unit is examined, what a full-mark answer looks like, and the common mistakes that cost students marks every single year. You will know not just what to say, but how to say it — and equally importantly, what not to write.
The course builds strongexam technique alongside content knowledge, covering every question type across Papers 1, 2, 3 and 4 — from multiple choice and short answer to structured and extended response questions. Students leave this course knowing exactly how to approach any question on this unit regardless of how it is worded.
Every video lesson comes with adownloadable PDF resource that contains everything you need to know for that specific lesson — definitions, diagrams, key points and exam tips — all written and structured to match exactly what the syllabus requires. There is no need to open a textbook, search for revision guides, or look anything up online. Simply watch the lesson, download the PDF, study from it, and go straight to past papers. Everything you need is right here in one place.
Thepractical component is fully covered in this course. Students are taken through the investigations into the effects of temperature and pH on enzyme activity — two of the most tested practicals at this level. Each experiment is broken down in detail — covering the method, variables, expected results, data interpretation and evaluation — with specific training on how to answer practical questions inPapers 5 and 6 that test experimental skills, data analysis and scientific reasoning under exam conditions.
This course is ideal for students aiming for high achievement and A* grades in Biology examinations.
Who this course is for
IGCSE/ GCE Biology Students Preparing for External Exams



   
   
   

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