Flash Cards for the Cell Transport Unit What are the two basic Active & Passive processes that transport Transport substances into and out of a cell? Which type of cell Passive Transport transport does not require a cell to use energy? Which type of cell Active Transport transport does require a cell to use energy? Give three examples of Diffusion, osmosis, and passive transport. facilitated diffusion What is diffusion? What is osmosis? Diffusion is the process by which materials move from areas where they are in higher concentration to where they are in lower concentration. Osmosis is the diffusion of water through a membrane. Give some examples of diffusion in everyday life. Give two examples of osmosis in everyday life. The smell of cooking or a dead skunk on the road Lettuce stays crispy when water is sprayed on it. Slugs die when salt is sprinkled on them. Give two examples of Facilitated diffusion active transport. and engulfing When would a cell use To move molecules active transport? from an area of lower concentration to an area of higher concentration. What is a semiA membrane that permeable membrane? allows only some (a.k.a. selectively substances to move permeable) through it. Give an example of A cell moves sodium active transport in molecules out even everyday life. when there is less sodium in the cell than outside of it. How is equilibrium reached during osmosis? Equilibrium is reached when the number of water molecules outside of the cell is equal to the number of water molecules inside of the cell. What is the importance The lower the ratio, the of the low surface area more efficiently to volume ratio of a substances can move living cell? into and out of a cell.