The whale's ability to hold its breath is, in a way, an evolutionary one-two punch: (1) The high concentration of myoglobin allows it to spend more time underwater in between breaths, and (2) the myoglobin's positive charge ensures the proteins don't clump together and kill the animal.
Lesson Summary. Let's review. A flagellum is a whip-like structure that allows a cell to move. They are found in all three domains of the living world: bacteria, archaea, and eukaryota.While all three types of flagella are used for locomotion, they are structurally very different.The eukaryotic flagellum is a long, rod-like structure that is surrounded by an extension of the cell membrane like a sheath.t is similar to a cilium in structure, though cilia generally move in a back and forth motion, as opposed to the corkscrew movement of a flagellum. The eukaryotic flagellum is a long, rod-like structure that is surrounded by an extension of the cell membrane like a sheath.
Cells in Motion. Cilia and flagella are cellular appendages that are capable of specific types of movement. The movement of these appendages allows the cell to move or to fulfill specific tasks. Flagella are relatively long tail-like structures that are capable of either undulating or rotational movement.hese two types of flagella share the same basic purpose of cellular motion, but bacterial flagella have additional functions related to the special types of movement they can produce. Eukaryotic flagella exhibit a wiggling or undulating movement that serves primarily to propel an entire cell.