Bacteria are single cell
organism having neither membrane-bounded nucleolus nor
membrane-bounded organelles like mitochondria and
chloroplasts. You can learn a lot about the life cycles of a
bacterium through bacteria diagram.
Bacteria are often considered as cause of diseases caused to
human or other animals. But there are certain bacteria like
actinomycetes they produce antibiotics such as streptomycin
and nocardicin. Other bacteria live symbiotically in the
guts of animals and human beings, plant roots which convert
nitrogen into the usable form. Bacteria help to breakdown
dead organic, it make up the food web in any environment.
Bacteria are of immense importance because of their extreme
flexibility, capacity for rapid growth and reproduction.
Bacteria diagram depicts membrane bound organelles such as:
Nucleoid: DNA in Bacterial cell is generally confined to the
central region of cell called as Nucleoid. Here it is not
bounded by a membrane; it is visibly distinct from the
entire cell interior. Updated : Mon, 08 Sep 2008 00:27:34 GMT
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Ribosome: Ribosomes are the granular organisms that we found
in all living species. Being very small almost some hundred
nanometer we need a electro micrograph to view them. The
ribosome can also be found in cell cytoplasm of the
bacteria.
Enodspore: there are few bacteria like clostridium
botulinium generates spores that are highly resisting
drought, high temperature and other environmental hazards.
Once the hazard is detached these spores germinates to
create new population. Starting from the outermost part when
we move towards inward we come across the following
structures:
Capsule: capsules are made of the layers of polysaccharides
which are proteins. Their function is to protect the
bacterial cell and it is often a bacterial cell associated
with pathogenic bacteria because it serves as a barrier
against phagocytosis by white blood cells.
Outer membrane: This lipid bilayer is created in gram
negative bacteria and is the source of lipopolysaccharide
commonly known as LPS. LPS is toxic and turns on the immune
system of, but not in Gram positive bacteria.
Cell wall: cell wall of peptidoglycan is composed of
polysaccharides plus proteins. The function of the cell wall
is to maintain the overall shape of a bacterial cell.
Bacteria are of three different shapes such as coccus
(spherical), bacillus (rodshaped) and spirillium (spiral).
Mycoplasma is the bacteria that have no cell wall and
therefore they do not have specific shape.
Periplasmic space: the cellular compartment is found in
those bacteria only those have outer membrane and plasma
membrane. (Gram negative bacteria). In between the space it
has enzymes and other proteins that are helpful in digesting
and moving nutrients into cells.
Plasma membrane: this is a lipid bilayer which is like the
cytoplasmic or cytoplasma of other cells. Numerous proteins
are also there within or upon these layers that are
primarily accountable for transport of the factors such as
ions, nutrients and waste across the membrane.
Appendages: Along with all these body parts bacteria
consists Pili which are hollow, hair like structures made up
of protein they permit the transfer from one bacteria cell
to another, they are also known as fimbriae.
Flagella: Flagella brings motility, they are long appendages
which revolves by means of the motor located under
cytoplasmic membrane.
Muna wa Wanjiru Has Been Researching and Reporting on
Bacteria for Years. For More Information on Bacteria
Diagram, Visit His Site at
BACTERIA DIAGRAMI
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