In Year 6/7 Science we have been looking at cells using light microscopes. The image above shows cells from a spring onion, stained with methylene blue, to show cell walls and nuclei. Cells are all different shapes and sizes, but the cell theory states:
- All living organisms are made up of cells
- Cells are the basic organisational units of life
- All cells come from pre-existing cells
Before the end of term we will be having a test on Classsification and Cells. You will need to know the following:
- What are five characteristics of living organisms? (usually require oxygen; require nutrients; produce wastes; respond to stimuli; reproduce themselves)
- How are living organisms classified? Five Kingdoms – Animals, Plants, Fungi, Bacteria (Monera) and Protists.
- What is a dichotomous key? A branching key used to classify organisms into groups, using questions with only two answers – yes or no.
- Name the parts of a light microscope.
- What are three important things about cells (the cell theory).
- What are the three main differences between animal cells and plant cells.