Amoebas have pseudopodia, or false feet. Proteins, like those found in a human's muscle, contract and relax their pseudopodia enabling them to move. Most amoebas are harmless. However, not all of them are. Some cause illnesses like amoebic dysentary.
Amoebas eat by a process called phagocytosis.
Their name means bearer of windows. The psuedopodia come out through the windows. Zoomastigotes contain at least on flagellum. Like amoebas, most are harmless, however, not all. These organisms are responsible for causing Giardia.