A2.2 Cell structure - Written tasks
These written tasks are designed to help students to practise using their knowledge and skills. In the topic of Cell structure this includes the estimation of cell size in sunflower petal epidermis, exam answer practice to compare prokaryotes with eukaryote cells, describing the evidence of the endosymbiotic origin of eukaryotic cell and analysing the effect of the environment on cell differentiation.
A2.2 Cell structure
Scientific skills
Specific skills mentioned in this topic include;
- Preparation of microscope slides of living cells.
- Identification of cells in images from microscopes.
- Identification of organelles in cells.
This application may be used as a lens through which to view this topic.
- Deductive reasoning can be used to make predictions.
E.g. Predict that an new organism with cells containing prokaryote features will be a bacterium.
Written task 1 - Calculate cell size
A2.2 Cell size - written task
This question is in the style of IB exam questions that test the skill of estimating cell size. Make a measurement and do a calculation to deduce the size of a cell.
Written task 2 - Improve comparisons in exam answers
A2.2 Compare cells - written task
This structured extension question is in the style of the IB exam questions but it has a particular emphasis on the concepts, the themes and links between them.
Written task 3 - Expertly explain concepts
A2.2 Evidence of endosymbiosis HL - written task
This structured extension question is in the style of the IB exam question using the "explain" command term. The activity is a chance to practice forming these more detailed answers and students can check their answers against the model answer provided.
Written task 4 - Find concepts in the question introduction.
A2.2 Cell differentiation - written task
This structured extension question is in the style of the IB exam questions. It has a particular focus on the concept of cell differentiation and the question begins with a little bit of information about the concept.
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