How can we take out the surface area/volume ratio of cells if surface area and volume are two different physical quantities?
Solution:
Surface area and volume are two different physical quantities but their ratio is taken to compare the growth of cells.
When the radius of a cell increases, its surface area increases as the square of its radius, but its volume increases as the cube of its radius (much more rapidly). Therefore, as a cell increases in size, its surface area-to-volume ratio decreases.
Surface area and volume are two different physical quantities but their ratio is taken to compare the growth of cells.
When the radius of a cell increases, its surface area increases as the square of its radius, but its volume increases as the cube of its radius (much more rapidly). Therefore, as a cell increases in size, its surface area-to-volume ratio decreases.