Surface area and volume relationships in cells r=1μm Surface area=l2.6μm2 4nr2 Volume=4.2μm2 Surface Volume 另 a cell increases in size, its surface area to r=2μm volume ratio decreases Surface area=50.3μm Volume=-33.5μm2 Surface=1.5 Volumea cell increases in size, its surface area – to – volume ratio decreases Surface area and volume relationships in cells