CIE International A-level Biology TOPIC 4 REVISION (Cell membranes and transport)

This detailed and engaging REVISION LESSON has been written to cover the content of topic 4 (Cell membranes and transport) of the CIE International A-level Biology specification. The lesson consists of a PowerPoint that contains exam questions, differentiated tasks and quiz competitions and is accompanied by worksheets with further activities. The competitions act to engage the students whilst they assess their understanding of the content and challenges their ability to apply this knowledge to potentially unfamiliar situations.

The lesson was designed to cover as much of the specification content as possible but the following sub-topics have received particular attention:

• Active transport and its applications in animals and plants
• Facilitated diffusion and the use of channel and carrier proteins
• The factors that affect diffusion as demonstrated by gas exchange at the alveoli
• Exocytosis
• Water potential and the movement of water by osmosis
• The effect of solutions of different water potentials on animal and plant tissue
• The fluid mosaic model
• The plasma cell membrane and the function of its components

As well as covering the current topic, the design of this lesson has been conscious to include future topics. For example, a cholinergic synapse was used to challenge the students to spot examples of facilitated diffusion, simple diffusion, active transport and exocytosis.

Revision lessons for the other 18 topics are uploaded on TES or are in the process of being uploaded.