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Bacteria are the unicellular prokaryotic microorganisms. Bacteria are smallest in size and are largest in numbers among living organisms. Bacteria were first discovered by a Dutch scientist Anton van Leeuwenhoek in 1670 in rain water, then in pond water and in scraping of his teeths. He consider them as animal cules. They show some plants like characters as presence of rigid cell wall and reproduction by spores. The average size varies in micrometers as smallest one is cocci i.e. from 0.5-3.5 microns and largest is spirillum 15-22 microns. They can be rod like ( E.col, Rhizobium), spherical may be monococcus, dicoccus, streptococcus (in chain), staphylococcus( in an irregular bunch), helical, vibrio, spiral, or filamentus. Some time they are pleomorphic e.g. Acetobacter. They are chemolithotrophs or chemoautotrophs and also heterotrophs. Reproduction is either vegitative or asexual ( by conidia, or endospores). True sexual reproduction and alteration of generation are absent in bacteria, and can be done by conjugation, transformation and transduction. According to six-kingdom classification the bacteria comes under Monera i.e. of prokaryotes. According to the Cavalier-Smith two EMPIRE and eight KINGDOM classification the bacterial Empire contains two kingdoms the Eubacteria and the archaeobacteria
Wiki User
∙ 15y ago
Wiki User
∙ 15y agoA bacterium is a unicelluar organism typically, meaning it only has one cell. Within this cell is a nucleus which stores genetic information allowing the organism to function, and cytoplasm in which many reactions essential for life to take place.
Wiki User
∙ 14y agocapsule with organelles in the center floating the cytosol. Its a Prokaryotic Cell. They have flagella usually which is a propulsion system with MT and cross linked dynein motor proteins that connect the 2 tubules and are themselves together with cross linked proteins. Internal structures have mitochondria, nucleus smooth ER rough ER.
Wiki User
∙ 9y agoThe basic structure of a bacteria is a very small organism with a cell membrane, cytoplasm and DNA.
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What is the basic unit structure in all organisms?
Cell
When a group of cells that all have the same basic structure and function come together what do they form?
A group of cells with the same basic structure and function makes a tissue. Different tissues come together to make organs.
What is the structure or behavior that allows an animal to perform a basic function in its environment is called a what?
adaptation instinct morphological specialization.
What structure makes up all living things?
Cells are the basic building blocks of all living things
How do to observe the surface features of a bacterium you would use a?
electron microscope.
A bacterium that can enter the structure of a host cell is called?
intracellular.
Basic structure of SQL?
SQL: Basic structure
What is the name of the structure bacterium may have and use to propel themselves?
Flagellum
What type of microscope can be used to view the internal structure of a bacterium?
lalala
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The basic structure of haor and nails is KERATIN.
What the cell structure separates a eukaryotic cell from its environment?
A bacterium is separated from its surrounding environment by its cell wall. It is a structure which provides protection and structural integrity to the bacterium.
What's the basic structure if a living thing?
A cell is basic structure of living things .
Is organism the cell the basic unit of structure?
The cell is the basic unit of structure of an organism.
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The Bacterium Streptomyces lividans
The basic unit of structure and function in a living thing is a?
The cell is the basic unit of structure and function in a living thing.
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its the basic basical
Basic control structure available in c plus plus?
The basic control structure in C++ is the if statement.
