IGCSE Biology 0610 Paper 4 Extended Revision (Part 1) | Oct/Nov 2026 Exam-Style Questions

Sitting Cambridge IGCSE Biology 0610 Paper 4 (Extended Theory) this October/November 2026? Part 1 of my two-part Paper 4 revision series: Questions 1 to 4 (40 marks) solved step by step, so you learn exactly how to write answers that earn the marks. ▶ Full playlist (all parts, in order):    • IGCSE Biology 0610 Paper 4 Extended Revisi...   ▶ Part 2 (Questions 5 to 8):    • IGCSE Biology 0610 Paper 4 Extended Revisi...   🔔 Subscribe:    / @nurnabisirigcse   📄 Download the blank revision paper (PDF) and try the questions yourself before watching: https://drive.google.com/file/d/1JE26... ✅ Check your answers with the full worked solutions and mark scheme (PDF): https://drive.google.com/file/d/1InTg... In this video I solve questions 1 to 4 of my own Paper 4 revision paper, written in the style of the real Cambridge 0610 Extended theory paper. Topics covered include: Enzymes: defining an enzyme, describing an amylase rate graph, why the rate falls above 40 °C (denaturation) and the Benedict's test for reducing sugar Transport in plants: defining transpiration, calculating water uptake from a potometer table, why moving air increases the rate, and how water moves up the xylem (cohesion and adhesion) The heart: identifying chambers and blood vessels on a diagram, why the left ventricle wall is thicker, the function of valves, and how a blocked coronary artery causes a heart attack Respiration and exercise: calculating a percentage increase in heart rate, why breathing rate increases during exercise, the word equation for anaerobic respiration, why breathing stays high after exercise, and the features of alveoli that make gas exchange efficient ⏱ Chapters: 0:00 Introduction 0:48 Q1 Enzymes and the amylase graph 5:13 Q2 Transpiration, potometer and xylem 10:24 Q3 The human heart 19:00 Q4 Exercise, breathing and respiration 25:27 Final exam advice Every answer is explained clearly, so you understand why it works and how to word it the way examiners expect. Watch the full series: Part 2 (inheritance, food webs, homeostasis and natural selection, Q5 to Q8):    • IGCSE Biology 0610 Paper 4 Extended Revisi...   Who is this for? Cambridge IGCSE Biology 0610 Extended students preparing for Paper 4 in the Oct/Nov 2026 session, and anyone revising for the 2027 exams. Teachers and parents can use it as a ready-made revision lesson. It also helps students sitting Edexcel International GCSE Biology. Exam tips: In a graph question, describe the trend using numbers from the graph, and always write the units. In an explain question, give a reason after every point, using the words because, so and therefore. Cohesion is water molecules sticking to each other; adhesion is water sticking to the xylem wall. How to use this video: pause, attempt each question yourself first, then watch the worked answer and mark your own work. If this helped your revision, please like the video, subscribe to the channel and turn on notifications for the next part. Share it with a friend sitting IGCSE Biology, and comment with the topic you want me to cover next. I read every comment and reply. Good luck with your exams! 🌐 Website with all my lessons: https://nurnabisirigcse.nurnabisirigc... 🎓 PRIVATE ONLINE TUITION with Nur Nabi Sir (IGCSE Maths, Physics, Chemistry & Biology) • One-to-One lessons: a personal plan, your own pace, your weak topics fixed. • Small-Batch classes: a small group of serious students, live online, with exam-style practice. Both include past-paper practice, exam technique and doubt clearing. Students and parents worldwide are welcome. 💬 WhatsApp: https://wa.me/966533147491 (+966 53 314 7491) 📩 Email: nurnabisirigcse@gmail.com 🏠 HOME TUITION IN JEDDAH: face-to-face lessons, booked on WhatsApp. Message me for a FREE trial class, and please include your name, subject, exam board, grade and time zone. #IGCSE #IGCSEBiology #0610 #CambridgeIGCSE #BiologyRevision