Passive transport moves substances through cell membranes without energy input via diffusion or osmosis, the diffusion of water. Active transport requires energy to move materials and uses transport proteins. Endocytosis and exocytosis involve transport of materials into and out of cells.

1. Moving Cellular Materials

2. Passive Transport The movement of substances through the cell membrane without the input of energy. Diffusion is one type of passive transport Osmosis is the diffusion of water through the cell membrane

3. Active Transport Energy is required to move materials through a cell membrane Transport Proteins

4. Endocytosis & Exocytosis