Activities
Equal or unequal cytokinesis - model answers
These are suggested model answers for the short IB style questions in Activity 2 - Reading about cytokinesis and the Mini experiment into cytokinesis, in the page Cell division & cytokinesis (2025) As...
Activities
Onion cell plasmolysis experiment (2025)
This experiment is a good introduction to data processing and illustrates skills needed for success in data analysis questions in IB exams. Students prepare slides of onion cells. They collect data about...
Activities
Onion osmosis - Lab technician prep sheet (copy)
This experiment is a good introduction to data processing and illustrates skills needed for success in data analysis questions in IB exams. Students use techniques learned earlier in the topic to prepare...
Activities
Membrane lipids (2025)
Lipids are important components of biological membranes. The membrane lipids are amphipathic: part of the molecule is hydrophilic, and part of the molecule is hydrophobic. Membrane lipids may be classified...
Activities
Membrane lipids - model answers
These are suggested model answers for the activity Cholesterol in the membrane activity and the Membrane fluidity IB style questions, in the page Membrane lipids (2025) As model answers they don't cover...
Activities
Meiosis as a source of variation (2025)
After a short introduction activity there are some structured notes about how meiosis causes variety in gametes and one example of an error in meiosis leading to a human condition. These questions are...
Activities
Mitosis and the Cell Cycle (2025) Free
Mitosis is a miraculous process. In the making of the three trillion cells of our bodies it manages to faithfully replicate and share the chromosomes equally between all the daughter cells. This lesson...
eBook
D2.1 Cell & nuclear division - student friendly summary
Blue text shows extra clarification or guidance. Guiding questions Standard and Higher level (3 hours) D2.1.1 - Generation of new cells in living organisms occurs by cell division.In all living organisms,...
Activities
Eukaryotic Cell Ultrastructure (2025)
This activity contains range of resources to teach about the structure of eukaryotic cells. An introduction to cell ultrastructure including a student activity sheet with examiner's hints is followed...
Activities
Cell Types Activity (2025)
In this Problem Based Learning activity students will identify different types of cells to help the New York aquarium re-open. Aquarium tanks flooded during the storm surge from hurricane Sandy must be...