GCSE Biology - Surface Area to Volume Ratio

The video explains the concept of surface area to volume ratio and its significance in organisms. It highlights how small organisms like bacteria rely on diffusion due to their high surface area to volume ratio, while larger organisms require specialized exchange surfaces and transport systems. The video uses cubes to demonstrate how surface area to volume ratio changes with size and applies these concepts to both animals and plants, emphasizing the need for efficient exchange and transport systems in larger organisms.

How do specialized exchange surfaces in humans enhance their surface area to volume ratio?

What role do transport systems play in larger organisms?

In what ways do plants utilize specialized structures for substance exchange?