Diffusion and Osmosis in Animal and Plant Cells - Year 7-8

This Year 7 worksheet on Diffusion & Osmosis in Cells introduces foundational concepts in cell biology, focusing on the processes of diffusion and osmosis in both animal and plant cells. The first section covers diffusion, explaining how particles move from areas of higher concentration to areas of lower concentration and providing examples such as dissolving sugar in water or gas exchange in lungs. The second part explores osmosis, guiding students to match incomplete sentences to explain water movement through cell membranes and the role of osmosis in biological processes. The final section addresses hypotonic, isotonic, and hypertonic states, allowing students to define each based on a diagram and identify the ideal conditions for animal and plant cells.

Classroom Application
This worksheet can be used to reinforce lessons on diffusion and osmosis after an introductory lecture. Students could work individually or in pairs to fill in the blanks and match sentences. For better understanding, teachers can supplement the worksheet with a class experiment, such as observing osmosis using potato slices in different salt solutions. Additionally, diagrams of diffusion and osmosis will help visualize these abstract processes, and class discussions on the best states for cells can deepen understanding of cell homeostasis.