PPT-FLAGELLA Bacterial flagella are long, thin appendages free at one end and attached to

Bacterial flagella are so thin 1520 nm depending on the species that a single flagellum cannot be seen by light microscopy unless it is stained to increase its diameter Flagellar Structure The bacterial flagellum is composed of three parts. . Burnside, Glenn, . Vanscoy. , White, Conrad. Actin. Filaments . Actin Filaments. Main Function: to help the contraction of cells . Found in: eukaryotic cells only. If Actin filaments were not present: myosin molecules would be scattered throughout the cell, and the cell would very disorganized and . Motility is closely linked with chemotaxis, the ability to orientate along certain chemical gradients.. A large number of bacteria are motile. . . Most . possess one or more flagella on their surface that allow them to swim. . Monotrichous – single flagellum at one end. Lophotrichous – small bunches arising from one end of cell. Amphitrichous – flagella at both ends of cell. Peritrichous – flagella dispersed over surface of cell; slowest. MBIO . 460. Lecture 4. Dr. . Turki. . Dawoud. 2. nd. Semester. 1436/1437 H . OTHER CELL SURFACE STRUCTURES AND INCLUSIONS. 4. 9 Cell Surface Layers, . Pili. , and . Fimbriae. Many prokaryotic organisms secrete slimy or sticky materials on their cell surface. . Monotrichous – single flagellum at one end. Lophotrichous – small bunches arising from one end of cell. Amphitrichous – flagella at both ends of cell. Peritrichous – flagella dispersed over surface of cell; slowest. zooflagellates. The third type of protozoan's are called zooflagellates.. It is an animal like protist that has flagella.. Most of the zooflagellates have one to eight flagella, to help them move.. Many of the zooflagellates live inside other organisms. Ex: Inside the intestines of termite.. Structure and Function. 2. Prokaryote & Eukaryote. Evolution. 3. Cellular Evolution. Current evidence indicates that . eukaryotes evolved from prokaryotes. between 1 and 1.5 billion years ago. Two theories:. 2. Prokaryote & Eukaryote. Evolution. 3. Cellular Evolution. Current evidence indicates that . eukaryotes evolved from prokaryotes. between 1 and 1.5 billion years ago. Two theories:. 1. . Infolding theory. Glycocalyx. Substance that surrounds the cell. Gelatin polymer containing sugars and proteins. If firmly attached to the cell wall = . capsule. If loosely attached to the cell wall = . slime layer. Functions. Jonathan Timothy . Adi. What are Flagella and Cilia?. Flagella and Cilia are the locomotion appendages of unicellular Eukaryotes. Basically they are the limbs of cells!. They can act like . legs, moving from place to place.. 11 . segments. . The . abdomen bears the external genitalia of the insect. In female insects these consist of an ovipositor. .. Each . segment of the abdomen . consists of a dorsal . sclerite. , . tergum. Jejuni. Flagella. Authors: Rita Moyes, . Andra. Robinson, Craig Wilson, Robert . Droleskey. Citation: Rita Moyes, . Andra. Robinson, Craig Wilson, Robert . Droleskey. . 2011. Transmission electron micrographs of negatively stained salmonella typhimurium flagella and fimbriae and campylobacter . /. 10. /. 2019 Dr. . oruba. Khalid . abbas. . . Lec. . : 2. . Welcome To. Meet the Microbes!. Coccus. Bacillus. Vibrio. Spirillum. . Mycoplasma. . Simplest prokaryotic unicellular organisms.. Show the characteristics of both plants and animals.. . Antoni. von . leeuwenhoek. (1632-1723) was the first to discover bacteria. French scientist .