Lesson Plan

• Describe the concept of active transport and why it requires energy.
• Explain how protein carriers move molecules or ions across a membrane.
• Identify the two main types of active transport and give an example of each.
• Outline the four‑step mechanism of carrier‑mediated active transport.
• Interpret the role of ATP hydrolysis in primary active transport.

• Projector and screen
• PowerPoint slides with diagram of a transporter protein
• Printed worksheet with table of transport types
• Model of a cell membrane (optional)
• Exit‑ticket cards

Begin with a quick “What moves across a cell membrane without help?” poll to activate prior knowledge. Highlight that some substances must move against a gradient, which cannot happen by diffusion alone. State that today’s success criteria are to understand the role of protein carriers and the energy behind active transport.

1. Do‑Now (5'): Students list examples of substances that need to be moved into cells against a gradient.
2. Mini‑lecture (10'): Define active transport, introduce ATP hydrolysis, and show the diagram of a protein carrier.
3. Interactive activity (12'): In pairs, students fill a worksheet comparing primary vs. secondary active transport (using the table from the source).
4. Demonstration (8'): Teacher models the four‑step mechanism with a magnetic model or animation.
5. Check for Understanding (5'): Quick “thumbs up/down” quiz on the steps and energy source.
6. Guided practice (10'): Students work on a short scenario where they identify which transport type is used.
7. Wrap‑up (5'): Review key points and answer lingering questions.

Summarise that protein carriers use ATP‑derived energy to move substances against gradients, distinguishing primary from secondary mechanisms. Students complete an exit ticket describing one real‑world example of active transport. Assign a brief homework: create a labelled sketch of a transporter protein showing the four steps.