Morphology and Fine Structure of Bacteria topics include: Size, shape and arrangement of bacterial cells, cell wall, structures external and internal to the cell wall.  Bacterial morphology is the structural features that help bacteria interact with their environment. These features include the size, shape, and arrangement of the cells.  The three basic shapes of bacteria are: Cocci: Spherical or oval-shaped bacteria that can live alone or in colonies Bacilli: Rod-shaped bacteria that are the oldest bacteria on Earth Spirals: Spiral-shaped bacteria  Bacteria are unicellular prokaryotic... Show more

Morphology and Fine Structure of Bacteria topics include: Size, shape and arrangement of bacterial cells, cell wall, structures external and internal to the cell wall. 

Bacterial morphology is the structural features that help bacteria interact with their environment. These features include the size, shape, and arrangement of the cells. 

The three basic shapes of bacteria are:
Cocci: Spherical or oval-shaped bacteria that can live alone or in colonies
Bacilli: Rod-shaped bacteria that are the oldest bacteria on Earth
Spirals: Spiral-shaped bacteria 

Bacteria are unicellular prokaryotic microorganisms. They contain circular double-stranded DNA, and some have extrachromosomal DNA called plasmids. Bacteria also have a plasma membrane, which is a phospholipid bilayer that acts as a permeability barrier and transports molecules into the cell. 

Bacteria can be classified as gram-negative or gram-positive. Gram-negative bacteria have a thin peptidoglycan covered by an outer lipid-containing membrane. Gram-positive bacteria have a thick peptidoglycan and no outer membrane. 

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