Parts And Functions BakteriBelajar Bacterial Cells:

 Parts And Functions BakteriBelajar Bacterial Cells


TOPICS: Parts And Functions BakteriBelajar Bacterial Cells: StrukturPengertian
POSTED BY: NANDASANJAYA FEBRUARY 11, 2016


Studying Bacteria Cells: Structure Definition, Parts and Functions Bacteria

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Learning Biology: Cell Bacteria

Bacteria is one of the living beings. Domain bacterial cells are in prokaryotes which means it has no nuclear membrane on its cell nucleus so that the core or nucleus of the bacterial cell spread. The nucleus of cells and the spread of bacteria called nukleoida (clear areas containing DNA in bacteria). One example of a bacterial cell is Escherichia coli, Bacillus subtilis, Salmonella typhimurium.
Structure of Bacterial Cells

Bacteria are single-celled, or unicellular creatures that do not have a nucleus wrapping. Apart from that, bacterial cells do not contain organelles organelles that are often found on eukaryotic cells such as animal cells and plant cells.
Before explaining more about the structure of the bacterial cell, you need to learn about many different forms of bacterial cells or bacterial cell morphology.
Here's an explanation of sorts forms of bacterial cells
Miscellaneous forms of bacterial cells

Broadly speaking, the form of bacterial cells composed of four kinds:
cocci
bacillus
Spiral
filamentous
Cocci bacteria cells are shaped like a ball-shaped or circular (2D). Bacterial cells that form spherical cocci or have some kind of direction that affects the formation of colonies of bacteria that form monokokus, diplokokus, diplococci, staphylokokus, Streptococcus, sarkina and tetrakokus.
Monokokus bacteria cells have a single form or attaches between one cell to another cell. Diplokokus bacterial cells divide by two two-cell or two cells each attaches. whereas staphylokokus bacteria have cell division in all directions except to the bottom and to the top of the field shaped bunches of grapes, while Streptococcus splitting lengthwise into two directions over 2 sarkina bacterial cells and cells divide like a cube 8-cell or 4-cell and 4-cell above the bottom. While tetrakokus bacterial cells divide every four cells in all directions except the top and bottom.

Studying Bacteria Cells: Structure Definition, Parts and Functions Bacteria

Cocci bacteria cell shape
Shaped bacillus bacteria cells have some form of division or form colonies like cocci-bacilli, monobasil, diplobasil, palisades (fences), and streptobasil. Shape cocci bacilli in bacterial cells means elliptical, shape monobasil bacterial cells means consisting of a single cell and attaches to other cells when to divide, while diplobasil splitting with two two cells. Palisades form of bacterial cells divide like a fence or cut laterally so that the bacterial cell is seen standing side by side with pembelahannya bacterial cells, while the shape of bacterial cells divide streptobasil like elongated chain.

Studying Bacteria Cells: Structure Definition, Parts and Functions Bacteria

Bacillus bacterial cell shape: Various kinds of bacterial cells
Spiral-shaped bacterial cell you can imagine as you twist the fabric. Spiral-shaped bacteria cells there are several kinds of spiral berdiperbesar, vibrio, a comma-shaped, spiral mace, and helical spiral. There is also a bacterial cell that is shaped like Borrelia burgdorferi bolts.
Bacterial cell filaments shaped like a mushroom shape or cells of hyphae in length. Besides other bacterial cell filament-winding is a spirochete.
Bacterial form spiral: Various kinds of bacterial cells

Bacterial form spiral: Various kinds of bacterial cells
After this let's learn the structure of the bacterial cell and the section parts
Bacterial cell structure and Section Section Bacterial Cells

The cell structure of bacteria in general everything is almost the same shaped nukleous nukleoida. the cell walls of bacteria, as well as minor form of plasmids and chromosomes contained or pili and pilus ribosomes. plasma membrane, and mesosom. Other extras like flagellum (flagella), S layer, karboksisome, magnetosome can be found in certain bacteria.
Here's a picture bacterial cell structure:
Studying Bacteria Cells: Structure Definition, Parts and Functions Bacteria
Structure of Bacterial Cells
Let's discuss the start of the bacterial cell wall. Bacterial cell walls are composed of peptidoglycan. Peptidoglycan is a polysaccharide chain composed of acid N-Asetilmuramik (NAM) and N-acetylglucosamine (NAG). Bacterial cell wall function in maintaining cell shape, maintain turgor pressure in the cell or cells due to the rich content of proteins in a cell. Cell wall in bacteria are divided into two types of gram positive and gram negative bacteria. Difference between the two lies in the amount of peptidoglycan and the specific characteristics of the membrane cytoplasm.
Plasma membrane of bacteria or cytoplasmic membrane, generally composed of a phospholipid bilayer. However, specific to gram-negative bacteria, has the outer membrane and periplasmic before reaching the cytoplasmic membrane so it looks like three layers. Layer outer membrane composed of lipopolysaccharide and protein. It distinguishes between gram-negative and gram-positive bacteria.
Studying Bacteria Cells: Structure Definition, Parts and Functions Bacteria
The cell wall structure of bacteria


Studying Bacteria Cells: Structure Definition, Parts and Functions Bacteria
Layer of the bacterial cell membrane
Flagella or flagellum (single) in bacterial cells function as locomotor bacteria. There are several kinds of flagella in bacteria based on the location and the amount in the bacterial cell. For more details about the bacterial cell division by flagellanya please read this article on the motility of bacteria.
Fimbriae or hair cells is a protein tubes that are on the outside of the cell. Its main function in attachment fimbriae but in some cases such as Myxococcus can function in motility of bacteria to form fruit bodies.
Besides fimbriae, there is also pili, has the same structure as fimbriae but longer and fewer of the bacteria. This is because the functions are more specific to conjugation as well as strengthen the adhesion of bacteria.
The inside of the cell are the ribosomes of bacteria that play a role in protein synthesis. Ribosomes in bacterial cells in contrast to eukaryotic cells in terms of size. The size of the bacterial ribosome is 70 S (S = Svedberg), with a large subunit and a small subunit 50 S 30 S.
In addition there are also ribosome cytoskeleton. Cytoskeleton function of the bacterial cell together with the eukaryotic cytoskeleton.
There is also the inclusion in bacterial cells such as fat droplets, crystals, glycogen, and pigments. Inclusion of bacterial cell has no membrane and does not metabolize.
In addition, there is also a gas vacuole. However vacuole gas only found in certain bacteria such as planktonic bacteria and cyanobacteria.
Bacterial cell also has a circular DNA and in some bacteria are linear DNA. Additionally, bacteria also have a DNA plasmid or mini functioning in forwarding certain information. Often referred to as extrachromosomal plasmid DNA.
Mesosome formerly known as a folding membrane produced by bacterial cells as an intracellular organelle or membrane, it was found as an artifact caused by the process of doing the observation using an electron microscope. However, there are several kinds of bacteria as intracellular membranes in bacteria fototrofik chromatophore, containing bakterioklorofil and carotenoids.
In addition there is also mikrokompartemen in bacteria such as karboksisome and magnetosome. Mikrokompartemen function in the metabolism of certain specific bacteria and wrapped so that it does not contain lipid protein because it is not covered by a membrane.
It seems like almost all the parts and structures of bacteria you have learned. For more details, I suggest you read a book specifically on bacteria such as bacteriology books.
Let us make sense of the bacterial cell so clearly defined. Definition of a bacterial cell is an organism that has the characteristics of living things with the structure of the cell walls are composed of peptidoglycan and has a very small size and does not have a nuclear membrane so have nukeleoida and are unicellular.
So and studying biology with the spirit yah ...
Bacteria Cells Keyword:
Cells, bacteria, Peptidoglycan, cell walls, organelles, ribosomes, Karboksisome, magnetosome, cell membrane, the cell structure of bacteria, the bacterial cell membrane, the cell wall of bacteria.