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Anonymous users2024-02-15Bacteria are one of the main groups of organisms, belonging to the bacterial domain, the kingdom Bacteria, and the most abundant category of all organisms. It comes in a variety of shapes, including spherical, rod-shaped, and spiral-shaped. Bacteria have a great influence on human activities.
On the one hand, bacteria are the causative agents of many diseases, including tuberculosis.
Gonorrhea, anthrax.
Syphilis, plague.
Diseases such as trachoma are caused by bacteria. However, bacteria are also often used by humans, such as the production of cheese, yogurt and wine, the manufacture of some antibiotics, and the treatment of wastewater.
Bacterial morphology. 1) Cocci:
Cocci are spherical or oval bacteria with a diameter of microns and are of the following types: Monococci: Alone, such as urea.
Micrococcus; Diplococcus: such as Pneumococcus; Streptococcus: such as Streptococcus lactis; Tetracoccus: 4 cells formed are arranged together, Narita characters, such as Tetracocci; Octococcus: such as Urea spora octococcus; Staphylococcus.
Such as Staphylococcus aureus.
2) Bacillus: rod-shaped bacteria are called bacilli, and there are often short-rod or globular rod-shaped bacteria with similar length and width, such as B. methane; Rod or rod bacteria with a large difference in length and width, such as Bacillus subtilis.
Clostridium; branched or forked bacteria, such as Bifidobacterium spp.; Bamboo (both ends truncated), such as Bacillus anthracis, etc.
Depending on the arrangement of bacillary cells, there are pairs of double bacilli, streptobacterium in the form of a chain, and there are often a variety of gratings, "eight" shapes, and filaments wrapped together by a sheath. Typical bacilli are Escherichia coli and Bacillus subtilis.
Streptobacter, Proteus.
3) Spiral:
Spiral bacteria are called spirochetes, generally 5 50 microns long, microns wide, according to the bending of the cell can be divided into: Vibrio: the spiral less than one ring is banana-shaped or comma-shaped, such as Vibrio cholerae; Spirolets:
small, hard spiral bacteria full of 2 6 rings, such as microspiromytes; Spirochetes: Spiral-shaped bacteria with many rotational cycles (usually more than 6 rings) and a long, soft body, such as Treponema pallidum.
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Anonymous users2024-02-14There are mainly 3 morphologies of bacteria, spherical, rod-shaped, and spiral-shaped.
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Anonymous users2024-02-13The basic forms of bacteria are:
1) Cocci:Cocci are spherical or oval bacteria in shape, micron in diameter, and have the following types: Monococci: Alone, such as urea micrococci.
2. Bacillus. Rod-shaped bacteria are called bacilli, and there are often short-rod or globular rod-shaped bacteria with similar length and width, such as Methano-Brevibacter (Methano-Brevibter); Rod-shaped or long-rod-shaped bacteria with large differences in length and width, such as bacillus subtilis.
3) Spiral:
Spiral-shaped bacteria are called spirochetes, generally 5 50 microns long, microns wide, according to the vibrio spiral of the body is less than one ring, it is banana-shaped or comma-shaped, such as Vibrio cholerae.
Bacteria (scientific name: bacteria) are one of the main groups of organisms and belong to the bacterial domain. It is also the most abundant group of all organisms, with an estimated total of about 5,10,30 individuals.
The shapes of bacteria are quite varied, mainly globular, rod-shaped, and spiral-shaped.
Bacteria also have a great influence on human activities. On the one hand, bacteria are the causative agents of many diseases, including tuberculosis, gonorrhea, anthrax, syphilis, plague, trachoma and other diseases.
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Anonymous users2024-02-12There are three main types of bacteria according to their morphology, namely: cocci, bacilli, and spirobacteria, and the main contents are as follows:
1. Coccus
It is spherical or nearly spherical, some are spearhead or kidney-shaped, and the diameter of a single coccus is about about about the same.
2. Bacillus
The size, length, curvature, and thickness of various bacilli vary greatly, and most of the bacilli are medium in size and 2 5um in length, wide, and large in size such as Bacillus anthracis (3 5um, small ones such as Bacillus hareus fever.
3. Spirillarbacterium has a curved body, which can be divided into:
a) Vibrio has only one curved body, which is arc-shaped or comma-shaped, such as Vibrio cholerae.
2) Spirillum has several bends. Such as rat bite hot spironium.
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