2026 updates
The following tweaks to the notes have been made based on analysis of the 2025 papers.
Topic 5 Energy transfers in & between organisms
2 tiny tweaks
5.1 Photosynthesis - Describe the light-independent reaction of photosynthesis (Calvin cycle)
5.2 Respiration - Describe the process of glycolysis
Topic 6 Organisms respond to changes in their internal and external
environments
2 small changes
Required practical 10 - Describe how the effect of an environmental variable on the movement of an animal (eg.
woodlice) can be investigated using a choice chamber - common questions
6.4.3 Control of blood water potential - Describe the formation of glomerular filtrate
Topic 7 Genetics, populations, evolution and ecosystems
No change
Topic 8 the control of gene expression
No change
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