eBook
B2.3 Cell specialisation - student friendly summary
Blue text shows extra clarification or guidance. Guiding questions• What are the roles of stem cells in multicellular organisms? This question points towards the function of stem cells, linking to the...
Activities
Specialisation - video task
This series of videos explains the research on Drosophila flies which led to an understanding of the way that concentration gradients of gene transcription factors can switch on genes and lead to specialisation...
Activities
Stem cells & specialisation
These activities cover the types of stem cells and their importance in the early development of an enbryo. The role of concentration gradients is key to the promotion of different genes in the various...
Activities
Movement & locomotion (2025)
This short series of activities explores the concepts of movement as one of the universal features of living organisms. Motile and sessile species are considered. The reasons for movement are explored...
eBook
B3.2 Transport - Revision quiz
This test contains a set of revision questions to help students prepare to be assessed on this topic. There are several question styles and answers with explanations....
Activities
Epidemiology - a heart study (2025)
The Framingham Heart Study is a long-term epidemiological study which began in 1948 and is still ongoing. This activity introduces the study with a few slides then gives students a chance to analyze the...
Activities
Pulse rate and coronary heart disease (2025)
This series of activities looks at traditional and modern ways of measuring pulse rates. It then focusses on the causes and consequences of the narrowing of the lumen of coronary arteries. Finally, the...
Activities
Root pressure & translocation HL (2025)
A short activity introducing phloem sieve tubes and translocation using a video and a worksheet followed by a worksheet outlining some experiments to measure translocation direction and rates and some...
Activities
Root pressure & translocation HL - model answers
These are suggested model answers for the activity Phloem structure and function worksheet on the page Root pressure & translocation HL (2025) As model answers they don't cover all the possible options...
Activities
The lymphatic system & tissue fluid - model answers (2025)
These are suggested model answers for the activity The formation of tissue fluid on the page The lymphatic system & tissue fluid HL (2025) As model answers they don't cover all the possible options for...