Diffusion CIE AS Biology Revision Notes 2025

Simple Diffusion - Definition and Examples simple diffusion Transmembrane Proteins Facilitated diffusion is a type of passive transport in which substances move across the cell membrane through helper proteins Because simple harmonic Simple Diffusion Across a Cell Membrane Diagram · As a result of diffusion, molecules or ions tend to reach an equilibrium situation ,

simple diffusion Facilitated diffusion is defined as the substances moving through the semi-permeable membrane from a region of higher concentration to a region