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Transcript
Name ______________________________________________ Chapter 8 guided Notes Cellular Transport What we need to know: Be able to explain the processes of diffusion, osmosis, passive transport, and active transport, and why they are important to the cell. Predict the effect of a hypotonic , hypertonic, and isotonic solution on a cell. Define osmosis - _______________________________________________________________________________________________ The plasma membrane can act as a dam for molecules that cannot pass freely through the membrane, it Does not limit the diffusion of __________________________. The movement of water across the membrane is important factor in maintaining __________________________ within the cell. Figure 8.1 during osmosis water diffuses across a ______________________________________________________________. Draw the two U tubes before and after in the space below: In your own words describe what happened to the water molecules and the sugar molecules. ___________________________________________________________________________________________________________________ ___________________________________________________________________________________________________________________ Why were the water molecules allowed to pass through? ____________________________________________________ Why weren’t the sugar molecules allow to pass through? ___________________________________________________ ___________________________________________________________________________________ In the table below copy what cells would look like in different solutions. Use page 197 in your text book. Diagram of cell Blood cell (animal cell) Plant cell Cell placed in an Isotonic solution Cell placed in a hypotonic solution Cell placed in a hypertonic solution _________________________________________________________________________________________________________________________ What is the difference between passive transport and active transport ? _________________________________________________________________________________________________________________________ _________________________________________________________________________________________________________________________ What is a concentration gradient? ( p 196 ) _________________________________________________________________________________________________________________________ _________________________________________________________________________________________________________________________ _________________________________________________________________________________________________________________________ What is endocytosis? ________________________________________________________________________________________________ What is exocytosis ? _______________________________________________________________________________________________ What kind of organisms use this type of transport of molecules ? ____________________________________________