Question

When talking about cell size, how does cell size affect the diffusion of materials into the cell? I have a table down below and I am attempting to discuss the results and could use some help. Thanks!

Agar cubes of the below dimensions were placed in a bromothymol blue solution, acetic acid, and sodium bicarbonate. What do the results of the experiment say in relation to cell size?

Block Dimensions	Surface Area (cm2)	Volume (cm3)	Time Required for Complete Color Change	Distance of Diffusion
1cmx1cmx1cm	6cm2	1cm3	14 minutes	4mm (0.4cm)
1cmx1cmx2cm	10cm2	2cm3	23 minutes	7mm (0.7cm)
1cmx1cmx6cm	26cm2	6cm3	22 minutes	6mm (0.6cm)

Answer 1

First of all there is some mistake with the 3rd block , a block having given dimensions would have 36cm2 of SA not 26cm2. ( Either there might be some modification that is not provided here).

And as size in increasing , surface area is in reading and volume is also increasing so it will take more time for diffusion to occur as it has to travel more distance now so distance of diffusion will increase and therefore , increasing cell size will cause slow diffusion.