To use a light microscope to examine animal or plant ... It is usually drawn to show a single cell, eg of a single cheek cell or onion cell.

Single-celled organisms that group together can generate stronger water currents to pull in food, a benefit that may have ...

Under microscopes, scientists found that giant single-cell organisms were able to vacuum up more food when they are stuck together. By Jack Tamisiea For a creature made up of only a single cell ...