Cell Length of one side Area of one side of the cube (l × w) Surface area (area of one side × 6 sides) Volume (l × w × h) Surface area / volume Ratio of surface area to volume (for example, 5:1) A 1 cm B 2 cm C 3 cm

The complete question is as follows:

1. What does a surface area/volume ratio of 6:1 mean for the cell’s ability to get the materials it needs that move across its surface?

2. What does a surface area/volume ratio of 3:1 mean for a cell’s ability to get materials across its membrane, compared to the cell with a ratio of 6:1?

1 . Surface area to volume ratio =  3 : 1

surface area=   3 cm³ or (l = 1 cm) (1 cm x 1 cm x  3) (W = 3)

volume=  1 cm³  (1cm x 1cm x 1cm)

2. Surface area to volume ratio =  6 : 1

surface area=  6 cm³  or (1 cm x 1 cm x 6 )  (w= 6)

volume=  1 cm³

Diffusion increases with the increase in surface area to volume ratio through the semi-permeable membrane of the cell membrane that allows substances to move into the cytoplasm