> What is the difference between cilia and flagella? Broadly and generally: • cilia come in large groups, in rows or in sheets; flagella come singly or in pai

> What is the difference between cilia and flagella? Broadly and generally: • cilia come in large groups, in rows or in sheets; flagella come singly or in pairs (occasionally more) • cilia are short, and they beat backwards and forwards in a coordinated way, like a Mexican wave; flagellae are long, and in prokaryotes, they spin around their axis. (Eukaryote flagella -- e.g. spermatozoan "tails" -- are a different structure that just resembles the ones in prokaryotes. Prokaryotes are bacteria and archaea -- no cell nucleus. Eukaryotas have cell nuclei and other organelles, such as mitochondria and chloroplasts. Their flagellae bend and flap, they don't spin.) Take 1 cell. Can you count the moving hair things? Then they're flagella. Is the beastie covered in lots of them, countless, like fur? Then they're cilia.