Lesson Plan

Resources → Subject Notes → Biology → Notes
Lesson Plan
Grade: Date: 25/02/2026
Subject: Biology
Lesson Topic: describe and explain the processes of simple diffusion, facilitated diffusion, osmosis, active transport, endocytosis and exocytosis
Learning Objective/s:
  • Describe the mechanisms of simple diffusion, facilitated diffusion, osmosis, active transport, endocytosis and exocytosis.
  • Explain how energy requirements and membrane proteins differentiate passive and active transport.
  • Compare the roles of each transport process in cellular function and plant‑cell turgor.
  • Apply knowledge to predict the movement of specific molecules across a membrane under given conditions.
Materials Needed:
  • Projector or interactive whiteboard
  • PowerPoint slides summarising each transport mechanism
  • Handout with comparison table and key diagrams
  • Model of a phospholipid bilayer (printable cut‑out)
  • Worksheets for guided practice
  • Exit‑ticket cards
 Introduction:
Begin with a quick demonstration: place a drop of food colouring on a piece of gelatin to visualise diffusion. Ask students what they already know about how substances cross cell membranes and list examples they can think of. Clarify that today’s success criteria are to identify each transport type, state whether it requires energy, and explain its biological significance.
Lesson Structure:
  1. Do‑now (5’) – Short quiz on everyday examples of diffusion and osmosis.
  2. Mini‑lecture (10’) – Slides on simple diffusion and facilitated diffusion, highlighting key factors.
  3. Interactive simulation (8’) – Online membrane model to manipulate concentration gradients and observe rates.
  4. Guided practice (10’) – Pairs complete a worksheet comparing all six transport mechanisms.
  5. Demonstration (7’) – Potato slices in sucrose solutions to illustrate osmosis and turgor pressure.
  6. Active transport & vesicular transport overview (10’) – Explain Na⁺/K⁺‑ATPase, secondary active transport, endocytosis and exocytosis with diagrams.
  7. Check for understanding (5’) – Exit‑ticket: each student writes one example of a passive and an active process.
  8. Homework briefing (5’) – Assign a short essay describing how a defect in a transport protein could affect cell function.
Conclusion:
Summarise that passive transport relies on gradients while active transport uses ATP, and vesicular pathways move large particles. Have students complete an exit ticket naming a real‑world scenario for each transport type. Remind them to read the textbook chapter and prepare a one‑page case study on a transport disorder for the next lesson.