What is Amoeba Amoeba is an aquatic, single-cell (unicellular) organism with membrane-bound (eukaryotic) organelles that has no definite shape. It is capable of movement. When seen under a microscope, the cell looks like a tiny blob of colorless jelly with a dark speck inside it. Some parasitic amoebae living inside animal bodies, including humans, can … Continue reading Amoeba: Parts and Structure with Characteristics and Diagram