The surface area/volume ratio is an important factor for one celled organisms. as a cell's volume grows, its surface area/volume ratio decreases, making it harder and harder to acquire enough nutrients via diffusion. because of this, cells stop growing after reaching a certain size. after reaching this state, a one celled organism is likely to a) enter into a spore state b)continue to grow until it is so big it burst c)use mitosis to diced and create daughter cells d)stop eating that it shrinks and it’s surface area/volume ratio grows