Spirochaete - Wikipedia
A spirochaete (/ ˈ s p aɪ r oʊ ˌ k iː t /) [4] or spirochete is a member of the phylum Spirochaetota (also called Spirochaetes [5] / ˌ s p aɪ r oʊ ˈ k iː t iː z /), which contains distinctive diderm (double-membrane) Gram-negative bacteria, most of which have long, helically coiled (corkscrew-shaped or spiraled, hence the name) cells ...
Spirochete | Definition, Examples, Diseases, & Facts | Britannica
spirochete, (order Spirochaetales), any of a group of spiral-shaped bacteria, some of which are serious pathogens for humans, causing diseases such as syphilis, yaws, Lyme disease, and relapsing fever. Examples of genera of spirochetes include Spirochaeta, Treponema, Borrelia, and Leptospira.
Spirochaete - an overview | ScienceDirect Topics
Spirochaetes are thin-walled spiralled flexible organisms which are motile by means of an axial filament. They are not seen in a Gram-stain (except B. vincenti ), but may be seen either by dark-ground illumination microscopy, or in a silver stain under the light microscope.
Spirochete - Definition and Quiz - Biology Dictionary
2017年4月28日 · A spirochete is a type of bacteria within the phylum Spirochetes. The spirochetes are so called because they are very long, thin shape and helically coiled, hence they have a spiraling corkscrew shape. The helical shape is one of three morphological categories of the prokaryotes.
8.11F: Spirochaetes - Biology LibreTexts
2022年12月24日 · Spirochaetes are chemoheterotrophic in nature and capable of thriving in anaerobic conditions. The spirochaetes are categorized by the presence of axial filaments which run lengthwise between the inner and outer membranes in periplasmic space.
Spirochetes: Morphology, Classification, Disease - Microbe …
2021年6月8日 · Spirochetes are long, thin, flexible, spirally coiled helical bacilli. These motile, gram-negative bacilli are classified into eight genera primarily on the basis of habitat, pathogenicity, phylogeny, morphological and physiological characteristics. These long slender bacteria are only a fraction of a micron in diameter but 5 to 250 microns long.
Definition, Morphology, Diseases - Biology Notes Online
2024年3月28日 · Spirochete is a type of bacteria characterized by its elongated, helically coiled (corkscrew-shaped) morphology, belonging to the phylum Spirochaetota. These bacteria are known for their unique movement mechanism using endoflagella and can be found in diverse environments, with some species causing diseases like Lyme disease and syphilis.
Definition, Characteristics, Gram Stain and Culture
Spirochetes (spirochaetes) are Gram-negative, spiral-shaped bacteria of the phylum Spirochaetes. In nature, they may exist as free-living bacteria, symbionts, or as parasites capable of causing diseases in animals.
Spirochaete - an overview | ScienceDirect Topics
Spirochetes (also spelled spirochaetes) are a group of long, slender, curved, spiral-shaped prokaryotes that exist widely in nature. Some spirochetes are important human pathogens.
The Phylum Spirochaetaceae - SpringerLink
2014年10月19日 · Spirochaetaceae is a family of spirochetes that cause Lyme disease and relapsing fever. The spirochetes are free-living or host-associated, saccharolytic, nonpathogenic, obligate or facultative anaerobic spiral-shaped bacteria of high motility and a variable number of periplasmic flagella.