Alveoli - Tiny air sacs giving the lungs a large surface area, Gills - Structures for gas exchange in fish, Villi - Tiny finger like structures giving the small intestine a large surface area, Diffusion - The net movement of particles from a high concentration to a low concentration, Kinetic energy - The energy of motion in particles, Gas excahnge - The movement of oxygen and carbon dioxide into and out of cells, Cell membrane - Structure that surrounds all cells controlling the movement of substances into and out of the cell, Equilibrium - Particles are evenly spread out in an area, Concentration gradient - The difference in the concentration of a substance in two areas, Root hair cells - Plant cells that have a large surface area for the absorption of mineral ions, Partially permeable - Some things can move through the surface, Aerobic respiration - Process that requires oxygen to release energy from glucose,

IGCSE Diffusion matching pairs

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