Vitamin C (ascorbic acid, C₆H₈O₆) is an essential nutrient and a reducing agent that is readily oxidised. In this investigation, you will use iodometric titration to measure the vitamin C content of fruit juice after exposure to two continuous variables: temperature and metal ion concentration. Both investigations use the same titration method, making this a versatile and highly scorable IB Chemistry IA topic. This practical is suitable for IB Diploma Chemistry and makes an excellent Internal Assessment (IA) topic.
Tag: Biology
IB Biology IA: Beetroot and Cell Membrane Permeability
IB Biology IA: Beetroot and Cell Membrane Permeability In this investigation, you will use beetroot tissue to explore how increasing temperature affects the permeability of cell membranes. As membranes are damaged by heat, the red pigment anthocyanin leaks out of the vacuole — the more pigment released, the more permeable the membrane has become. A colorimeter is used to measure absorbance quantitatively, making this an excellent IB Biology IA investigation. This practical is suitable for IB Diploma Biology and Edexcel IGCSE Biology students.
What is Osmosis?
What is osmosis? Learn about water potential, partially permeable membranes and how osmosis works in living cells. IGCSE and IB biology revision guide.
IGCSE Biology Revision – Quizlet Flashcard Links
Free IGCSE Biology Quizlet flashcard links for every topic. Interactive revision with flashcards, quizzes and games for Edexcel IGCSE Biology students.
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How to demonstrate IB Learner Profile attributes in Biology. Examples and applications for IB Diploma students and teachers with practical activities.
IGCSE Edexcel Science Prescribed Practicals: Complete Guide
Complete guide to all Edexcel IGCSE Science prescribed practicals for Biology, Chemistry and Physics. Methods, results and tips for exam success.





