Agar cube diffusion lab – Emmi blk X bio 12

  1. the most effective size cube was the 1cm cube
  2. the 1cm cube was most effective because it had less volume to diffuse with the pink dye. the factors effecting this are is the cube is small, its less space to fill, and less time to diffuse the whole cube
  3. the cells cant grow very large because they need to transfer nutrients and feed organelles along with getting rid of waste, so if the cell is really big, they cant do the jobs efficiently
  4. the 4:1 ratio cube will be more efficient because the surface area is larger in comparison to the volume.
  5. for gas exchange your body, the ratio of a cell must be so that the cell membrane has enough surface area to serve the volume of the cell, including the exchange of gases
  6. bacteria are single cell organisms, so they have to keep dividing in order to keep their surface area volume ratio adequate to survive.
  7. multi cellular organisms don’t have to depend on just their organelles like bacteria have to they have specialized cells they can depend on.


the agar cubes 10 seconds after submersion into the base mixture. 10 minutes on the stop watch.

all the cubes after coming out of the 10 minutes submersion.

the most significant cube was the 3x3x3 cube, it was the most noticable diffused cube, once we cut into it, we saw how much hadnt been dyed.









Leave a Reply