eBook
C1.3 Photosynthesis - student friendly summary
Blue text shows extra clarification or guidance. Guiding questions SL and HL C1.3.1 - The energy transformation of light energy to chemical energy, when carbon compounds (e.g. sugars) are produced inphotosynthesis,...
Activities
DNA structure - nucleosomes HL (2025)
This lesson introduces students to nucleosomes, and some of the details of DNA structure which will help to understand DNA replication. This includes the purine and pyrimidines bases as well as 5' and...
Activities
Gene pools (2025)
This activity covers details about how natural selection changes gene pools. After consideration of what a gene pool is and the way that natural selection causes changes in gene pools this lesson looks...
Activities
Types of mutation (2025)
Gene mutations cause several types of structural changes in the DNA of genes. Sickle cell disease is used as an example of a base substitution mutation. Students build on the basic vocabulary and apply...
Activities
Loss of biodiversity - model ansers
These are suggested model answers for the activity Ecosystems loss case studies research As model answers they don't cover all the possible options for correct responses, but they provide a very good...
Activities
Gene pool - model answers to video questions ()
While watching the video https://youtu.be/8yvEDqrc3XE answer the following questions. A group of actually or potentially interbreeding populations which are reproductively isolated from other groups _______________________...
Activities
Adaptive radiation model answers ()
The document below shows suggested model answers to the questions on the activity on finch beak sizes in Galapagos which is found on the page: Evolution examples Please notes these are suggestions,...
eBook
D4.1 Natural selection - student friendly summary
Blue text shows extra clarification or guidance. Guiding questions SL and HL D4.1.1 - Natural selection drives evolutionary change.Natural selection operates continuously and over billions of years,...
Activities
Sickle Cell Haemoglobin - model answers
This page shows suggestions of model answers for the activity; Sickle Cell base substitution activity on the SL activities page Types of mutation (2025) These are suggestions, not a mark scheme and many...
Activities
Biological codes for genes & polypeptides (2025)
Before looking at DNA database searches it is important for students to have an understanding of some of the terminology used in protein structures and genetic code. This activity uses a 'geeky' cryptic...