Activities
Receptors & binding sites (2025)
This lesson introduces the fundamental concepts of cell signalling, including the role played by receptors and signalling molecules, or ligands. It then goes on to explore how cell signalling is important...
Activities
Receptors and binding sites - model answers
These are suggested model answers for the activity Cell signalling comprehension on the gut microbiome on the page Receptors & binding sites (2025) As model answers they provide a very good guide for...
Activities
Quorum sensing - model answers
These are suggested model answers for the activity Quorum sensing activity on the page Receptors & binding sites (2025) As model answers they provide a very good guide for students seeking to improve...
Activities
Fisheries management - model answers
This page shows suggestions of model answers for the activity Fisheries management student worksheet on the page Sustainability (2025). These illustrate good students answers and, of course, there are...
Activities
Respiration of lipids - model answers
These are suggested model answers for the activity, Respiratory substrates - questions on the page Respiration of lipids & carbohydrates As model answers they don't cover all the possible options for...
Activities
Respiration of lipids & carbohydrates
This activity uses the details about glycolysis, the link reaction and the Krebs cycle to develop an understanding of the way which lipids and carbohydrate molecules (other than glucose) are respired...
Activities
Glycolysis Link reaction & Krebs Cycle HL (2025)
In this activity students revisit the SL details of respiration with a few simple resources about glycolysis,the link reaction and the Krebs Cycle. Students are challenged with the production of a diagram...
Activities
Respiration IB-style questions - model answers
These are suggested model answers for the activity, Mitochondria and respiration - IB style questions on the page Glycolysis Link reaction & Krebs Cycle HL (2025) As model answers they don't cover...
Activities
Nephron structure - model answers
The slides show the suggested model answers for the activity Student's worksheet on kidney nephron structure and function. As model answers they don't cover all the possible options for correct responses,...
Activities
Kidney - excretion & osmoregulation (2025)
In this lesson students begin with a look at the gross structure of the kidney followed by a detailed analysis of the structure and function of the nephron. There is a practical dissection activity and...