B1 - Cells and Organisation

Magnification = image size / actual size

Diffusion = net movement of particles from high to low concentration (passive process). Diffusion happens during gas exchange in the lungs

Osmosis = the movement of water particles from an area of high to low concentration through a semi permeable membrane Active transport = movement of substances from a low to high concentration through a semi permeable membrane. This requires energy

Specialised cells = gone through differentiation to serve a certain purpose