OCR Biology B3 part 2

Enzymes ,[object Object],[object Object],[object Object]

[object Object],[object Object]

Definitions ,[object Object],[object Object],[object Object],[object Object]

Denaturing enzymes ,[object Object],[object Object],[object Object],[object Object]

Diffusion ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Surfaces Across Which Gases Are Exchanged Are Often Specialised in Humans by Having Large Surface Areas This is to increase the rate at which diffusion can occur ,[object Object],[object Object],[object Object],[object Object],[object Object]

Diffusion Cells use diffusion to swap the oxygen they need for the carbon dioxide they no longer want: Other examples of where diffusion happens in humans: Alveoli in the lungs Villi in the intestines Oxygen diffuses in Out goes waste CO 2

Changing the rate of diffusion ,[object Object],[object Object],[object Object],[object Object]

Surfaces adapted for diffusion Villi ,[object Object],[object Object],[object Object],[object Object],[object Object]

Alveoli – in the lungs ,[object Object],[object Object],[object Object],[object Object],[object Object]

Other substances adapted for diffusion ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

The Alveoli in the Lungs Provide a Massive Surface Area for Exchange of Oxygen & Carbon Dioxide Alveoli

OCR Biology B3 part 2

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OCR Biology B3 part 2