Cell Transport by Michael

Transportation between cells can happen in three different ways. There is active transport, and passive transport. In passive transport you have Diffusion and Facilitated Diffusion.

            In active transport, a molecule requires energy from the cell to enter and leave the cell. It is required when moving a molecule. It’s when the molecule moves against the grain. This means that they move from an area of low concentration to an area of high concentration. For example, if you sprayed perfume in two corners of a room, through active transport, the amount that you sprayed less of would go straight towards where there is more perfume.

            Diffusion is a form of passive transport. It occurs when a molecule moves from an area of high concentration to an area of low concentration. It spreads out to make all of the room in a cell evenly distributed. Osmosis is the diffusion of water through a membrane.

            Facilitated diffusion is when diffusion needs to be helped. It moves molecules and ions through specific transmembranes. It makes some things easier to pass through the membrane. Some things that need this are glucose, sodium, and chloride ions need to have facilitated diffusion to pass through the membrane.