âº a large bag used to carry things on your back, used especially by people who go camping or walking: It's a frame backpack with a belt and padded shoulder straps. Thesaurus: synonyms and related words. Containers for carrying personal possessions. attachÃ© case. baggage.
Protists and other single celled organisms move by either the use of Cilia, fagellae or by pseudopodia.Cilia are short hair-like structures which help the organism move with a wave like motion there are usually many over the animal's surface. Flagellae are single whip like organelles which propel the organism.rotists and other single celled organisms move by either the use of Cilia, fagellae or by pseudopodia.
Prokaryotic flagella, which have a completely different structure built from the protein flagellin, move in a rotating fashion powered by the basal motor. Defects in the cilia and flagella of human cells are associated with some notable medical problems.