Effects of Osmosis
Name____________________
Date_____________
Period___
Standard(s):
 1.a.
Students know cells are enclosed within semipermeable membranes that
regulate their interaction with their surroundings.
Objective(s):


describe the structure and function of the cell membrane.
explain the various methods through which molecules are transported into and out of the
cell.
Directions: Using the hyperlink below define of each of the terms below in your own
words. Then find an image of the effect of osmosis on each cell in the various solutions
using the internet. Make sure to use arrows showing the movement of water
molecules into and out of the cell. Label the solutions inside of the cell and outside
of the cell. For the water molecule concentration gradient fill in the answer with
either an =, >, and < sign.
Resource:
 http://www.tvdsb.on.ca/WESTMIN/science/sbi3a1/cells/Osmosis.htm
 http://www.youtube.com/watch?NR=1&v=AYNwynwaALo
 http://highered.mcgrawhill.com/sites/0072495855/student_view0/chapter2/animation__how_diffusion
_works.html
 http://highered.mcgrawhill.com/sites/0072495855/student_view0/chapter2/animation__how_osmosis_
works.html
Definitions(in your own words):
 Osmosis Isotonic Hypertonic Hypotonic-
Isotonic Solution:
Water Molecule Concentration Gradient:
H2O Molecule Concentration Inside of Cell____H2O Molecule Concentration Outside of the Cell
Hypertonic Solution-
Water Molecule Concentration Gradient:
H2O Molecule Concentration Inside of Cell____H2O Molecule Concentration Outside of the Cell
Hypotonic Solution:
Water Molecule Concentration Gradient:
H2O Molecule Concentration Inside of Cell____H2O Molecule Concentration Outside of the
Cell