3 Written Questions

1. cell membrane surrounds a particle, forms a vacuole within the cell
2. small molecules move across the cell membrane and caused by moving and colliding of molecules
3. diffusion of water molecules through a selectively permeable membrane

2 Multiple Choice Questions

1. moving from high concentration to low concentration
   1. active transport
   2. osmosis
   3. diffusion
   4. passive transport
2. movement of materials through a cell membrane using cellular energy
   1. selectively perminal
   2. passive transport
   3. diffusion
   4. active transport

2 True/False Question

1. transport protiens → pick up molecules outside the cell and carry them in, using energy
   

   True        False

2. selectively perminal → some substances can move through and some cannot
   

   True        False