Download Here

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 ? ____________________________________________