Which is better 1 big cell or 4 small cells

4 samll cells.

the surface area to volume ratio is very important to a cell. surface area refers to the material exchange while volume refers to the rate of consumption. 4 small cell actyually may have larger surface area than a big cell, which means the faster rate of material echange. so it's better to have 4 small cells.

a compound light microscope is used to magnify objects in steps.  

hope it