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Flagela adalah alat gerak berbentuk cambuk pada sejumlah organisme bersel satu. Suatu individu dapat memiliki satu atau lebih flagella. Contohnya adalah alga bersel satu Euglena viridis dan bakteri Escherichia coli.




Prokariota


Flagela pada prokariota merupakan suatu berkas kosong tanpa membran, panjangnya 312 mikrometer dan diameternya 1020 mikrometer, terdiri dari subunit yang susunannya berpilin dari protein flagelin. Penempelan flagela dengan 'kait', 'pelor roda' dan 'rotor'. Flagela itu dalam bentuk pilinan yang tetap, tetapi ada yang sering berputar selaras. Flagela memperoleh energi dari kekuatan proton motif. Flagela terlibat dalam respon kemotaksis oleh sel.




= Bakteri

=
lanciau




= Arkea

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Penyusun flagelanya berbeda dengan bakteri, yaitu beberapa protein flagelin dan tidak ada kecocokan dengan bakteri.




Eukariota


Flagelum pada eukariota adalah perluasan membran sel pada sel-sel tertentu dengan aksonema internal, badan basal, dan sebagainya, identik dengan yang ada pada silia (cilium), tetapi secara keseluruhan, panjangnya lebih bervariasi, dan biasanya lebih panjang. Flagela bergetar seperti ombak sehingga berbeda dengan silia, gaya renang ke bawah diikuti oleh pukulan ke atas sehingga daya tahannya kurang. Pada beberapa alga dan fungi, flagela mempunyai peranan dalam pergerakan, mendorong organisme tersebut ke dalam air. Pada tumbuhan seperti lumut, lumut hati, paku-pakuan, dan beberapa tumbuhan berbiji terbuka (umpamanya Ginkgo), flagela hanya terdapat pada gamet; struktur tersebut tidak ada pada tumbuhan bunga. Permukaan luar ada yang halus. (Whiplas flagellum), atau dapat dihiasi satu atau lebih sisik renik (tinsel flagellum). Sel sperma mamalia juga memiliki flagela.




Bacaan lanjutan

Kata Kunci Pencarian:

• Flagela
• Kaum flagela
• Bakteri
• Protozoa
• Eukariota
• Sel (biologi)
• Arkea
• Struktur sel bakteri
• Silia
• Prokariota
• Rafael López Aliaga
• Rubén Ochandiano

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Daftar Isi

• Flagellum - Wikipedia
• Flagella: Structure, Types, Arrangement, Functions, Examples
• Flagellum - Definition, Function, Types & Quiz - Biology Dictionary
• Flagella- Structure, Types And Function Of Flagella - BYJU'S
• The Role of the Bacterial Flagellum in Adhesion and Virulence
• Flagellum | Prokaryotic, Bacterial, Motor Protein | Britannica
• Flagella: Structure, Types, and Role in Cellular Movement
• Flagella: Structure, Arrangement, Function • Microbe Online
• Flagellum - Definition and Examples - Biology Online Dictionary
• Flagella: Types, Function & Structure - Sciencing

Flagellum - Wikipedia

Prokaryotic (bacterial and archaeal) flagella run in a rotary movement, while eukaryotic flagella run in a bending movement. The prokaryotic flagellum uses a rotary motor, and the eukaryotic flagellum uses a complex sliding filament system.Eukaryotic flagella are ATP-driven, while prokaryotic flagella can be ATP-driven (Archaea) or proton-driven (Bacteria).

Flagella: Structure, Types, Arrangement, Functions, Examples

Nov 7, 2023 · Types of Flagella 1. Bacterial flagella. Bacterial flagella are helically coiled structures that are slightly longer than the archaeal and eukaryotic flagella.

Flagellum - Definition, Function, Types & Quiz - Biology Dictionary

Apr 27, 2017 · Flagellum Definition. A flagellum is a microscopic hair-like organelle used by cells and microorganisms for movement. The word flagellum in Latin means whip, just like the whipping motion flagella (plural) often use for locomotion. Specialized flagella in some organisms are also used as sensory organelles that can detect changes in temperature and pH.

Flagella- Structure, Types And Function Of Flagella - BYJU'S

Flagella are microscopic hair-like structures involved in the locomotion of a cell. The word “flagellum” means “whip”. The flagella have a whip-like appearance that helps to propel a cell through the liquid.

The Role of the Bacterial Flagellum in Adhesion and Virulence

(A) Schematic presentation of bacterial flagellum structure. The pentameric FliD cap at the distal end of the filament, the hollow filament composed of about 20,000 identical flagellin subunits, the junction zone between filament and hook, and the hook connecting the filament to the basal body, represent extracellular parts (green shades) of the flagellum.

Flagellum | Prokaryotic, Bacterial, Motor Protein | Britannica

Dec 24, 2024 · flagellum, hairlike structure that acts primarily as an organelle of locomotion in the cells of many living organisms. Flagella, characteristic of the protozoan group Mastigophora, also occur on the gametes of algae, fungi, mosses, slime molds, and animals.Flagellar motion causes water currents necessary for respiration and circulation in sponges and coelenterates.

Flagella: Structure, Types, and Role in Cellular Movement

Oct 22, 2024 · Flagella are cellular appendages that play a role in the movement of various microorganisms, including bacteria and certain eukaryotic cells. Their function is important for locomotion and impacts processes such as nutrient acquisition and environmental adaptation.

Flagella: Structure, Arrangement, Function • Microbe Online

Flagella are attached to bacterial cells in different places. As the number and location of flagella are distinctive for each genus, flagellar arrangements can be used to classify bacteria.There are four types of flagellar arrangement, flagella may be located at one of the cells (monotrichous flagella), flagella may be present at both ends of the cell (lophotrichous flagella), and a single ...

Flagellum - Definition and Examples - Biology Online Dictionary

Jun 30, 2023 · Flagellum Definition. Flagellum is a slender, hair-like structure composed of a complex arrangement of multiple proteins, lipids, and other molecular components. It is a remarkable biological structure that showcases the intricacy and efficiency of nature’s design. The word flagellum belongs to Latin origin that means “whip”.Found in various organisms, from …

Flagella: Types, Function & Structure - Sciencing

Mar 28, 2019 · Flagella for prokaryotes such as bacteria are made up of three parts:. 1. The filament of the flagellum is a hollow tube made of a flagellar protein called flagellin. 2. At the base of the filament is a flexible hook that couples the filament to the base and acts as a universal joint. 3. The basal body is made up of a rod and a series of rings that anchor the flagellum to the cell …