Osmosis & Diffusion S1L H.W Name: Date:
Ex - 6.1 The effect of size and temperature on diffusion
Which temperature caused more diffusion?
Which dye diffused the fastest and why?
Ex6.2 Effect of solute concentration on osmosis
Which bag lost water, was it bag1,bag2, bag3 and why?
Ex 6.3 Selective Permeability of Membranes
Which molecules were able to diffuse through the membrane and why?
What physical property of the membrane contributed to diffusion?
Ex 6.4 Osmosis with red blood cells (cells that lack a cell wall)
Choose the circle and draw appropriately either a shriveled cell or a normal cell, label structure cell membrane
0.9% NaCl 10% NaCl
Total magnification: 400X 400X
6.5 Draw the appearance of elodea cells in water and salt
Label: chloroplast, plasma membrane, cell wall, cytoplasm, central vacuole .
Distilled water 20% NaCl

Total magnification: 400X 400X
Will elodea cells bloat and explode when placed in water?
What will happen to elodea when placed in 20% salt?
Summary: