What is stichonematic flagellum
Answers
A flagellum (/fləˈdʒɛləm/; plural: flagella) is a lash-like appendage that protrudes from the cell body of certain bacteria and eukaryotic cells termed as flagellates. A flagellate can have one or several flagella. The primary function of a flagellum is that of locomotion, but it also often functions as a sensory organelle, being sensitive to chemicals and temperatures outside the cell.[1][2][3][4] The similar structure in the archaea functions in the same way but is structurally different and has been termed the archaellum.[5]
Flagella are organelles defined by function rather than structure. Flagella vary greatly. Both prokaryotic and eukaryotic flagella can be used for swimming but they differ greatly in protein composition, structure, and mechanism of propulsion. The word flagellum in Latin means whip.
An example of a flagellated bacterium is the ulcer-causing Helicobacter pylori, which uses multiple flagella to propel itself through the mucus lining to reach the stomach epithelium.[6] An example of a eukaryotic flagellate cell is the mammalian sperm cell, which uses its flagellum to propel itself through the female reproductive tract.[7] Eukaryotic flagella are structurally identical to eukaryotic cilia, although distinctions are sometimes made according to function or length.[8] Fimbriae and pili are also thin appendages, but have different functions and are usually smaller.
Types
Prokaryotic flagella run in a rotary movement, while eukaryotic flagella run in a bending movement. The prokaryotic flagella use a rotary motor, and the eukaryotic flagella use a complex sliding filament system. Eukaryotic flagella are ATP-driven, while prokaryotic flagella can be ATP-driven (Archaea) or proton-driven (Bacteria). [9]
Prokaryotic flagella run in a rotary movement, while eukaryotic flagella run in a bending movement. The prokaryotic flagella use a rotary motor, and the eukaryotic flagella use a complex sliding filament system. Eukaryotic flagella are ATP-driven, while prokaryotic flagella can be ATP-driven (Archaea) or proton-driven (Bacteria). [9]
Three types of flagella have so far been distinguished: bacterial, archaeal, and eukaryotic.
The main differences among these three types are:
Bacterial flagella are helical filaments, each with a rotary motor at its base which can turn clockwise or counterclockwise.[10][11][12] They provide two of several kinds of bacterial motility.[13][14]
Archaeal flagella (archaella) are superficially similar to bacterial flagella, but are different in many details and considered non-homologous.[15][16][17]
Eukaryotic flagella—those of animal, plant, and protist cells—are complex cellular projections that lash back and forth. Eukaryotic flagella are classed along with eukaryotic motile cilia as undulipodia[18] to emphasize their distinctive wavy appendage role in cellular function or motility. Primary cilia are immotile, and are not undulipodia; they have a structurally different 9+0 axoneme rather than the 9+2 axoneme found in both flagella and motile cilia undulipodia.
Answer:long tinsel type flagellum is known as stichonematic arrangement.