An organism has a spherical unicellular structure, such as the giant amoeba Chaos carolinense when suspended in water. This cell has a spherical shape, a diameter of 0.50 mm, and a surface area of 0.785 mm2.
Calculate the surface area to volume ratio (SA:V) of this cell. Use the formula:
Volume of a sphere=43πr3 \text{Volume of a sphere} = \frac{4}{3}\pi r^3 Volume of a sphere=34πr3Give your answer to 3 significant figures in the form X:1X:1X:1.
Explain why a large SA:V ratio is an advantage for a unicellular organism.
