Form 5 Biology (Chapter 1: Transport)

Biology Form 5: Chapter 1

Chapter 1: Transport 1.1The Importance of Having a Transport System in Some Multicellular Organisms 1. Living organisms need to exchange:a) food b) waste materials c) gases 2. The volume of the body is great and diffusion is too slow to transport substances. TSA/V 1. Diffusion of substances can occur if: a) TSA/V is large. b) distance between the source of the substances and the cells is small. c) concentration gradient is high.

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