Side Surface Length Area cm cm 1 2 3 24 54 1 cm 2 cm 3 cm Volume cm 1 cm 2 cm 3 cm 1 293 27 On this table you will find a block of agar or precut agar cubes that have been infiltrated with a pH indicator If the cubes have not already been cut put on a pair of gloves and carefully cut the large agar block into a 3cm cube a 2cm cube and a 1cm cube After you have finished cutting the cubes calculate the surface area volume and surface area to volume ratio for each cube and fill in columns 2 4 of the table below The remaining columns will be filled in with question 4 2 4x 2 1x 1 74 2 7 SA V Ratio Volume that did not turn pink None G 2 6 16 851 13 608 Volume diffused equals total volume volume not pink 1 0 1 9 6 851 2 1491 27 13 608 13 392 1 7x 1 3x 1 9 1 2 27x100 1 What happened to the surface area as the length increased What happened to the volume The sur Faace area and the volume also increased as the length increased increased Diffusion Volume diffused total volume x 100 0 0l 1X100 2 149 0 0024 9x100 13 392 2 What happened to the surface area to volume ratio as the length of a side increased The surface area to volume ratio decreased as the length of a side increased 3 Which size cube has the greatest surface area to volume ratio 0 00496 4 How does the size of a cell impact rates of diffusion To examine this place each of the cubes in a beaker containing 200mL of NaOH for 10 minutes and stir periodically After 10 minutes remove the cubes dry them with a paper towel and cut them in half Measure the volume of the cube that did not turn pink and complete the remaining columns of the table Which size cube was most effective for maximizing diffusion