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The Ultrastructure Of A Typical Bacterial Cell. By Luke Jones. The Bacterial Cell. This is a diagram of a typical bacterial cell, displaying all of it’s organelle. The Bacterial Cell. This is what a bacterial cell looks like under an electron microscope .

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the bacterial cell
The Bacterial Cell
  • This is a diagram of a typical bacterial cell, displaying all of it’s organelle.
the bacterial cell1
The Bacterial Cell
  • This is what a bacterial cell looks like under an electron microscope.
bacterial cell wall
Bacterial Cell Wall
  • Made from the Glycoprotein murein.
  • Its purpose is to provide the cell with strength and rigidity.
  • It is permeable to solutes.
cell membrane
Cell Membrane
  • This is made from phospholipids, proteins and carbohydrates, forming a fluid-mosaic.
  • It surrounds the bacteria and is its most important organelle.
  • It is controls the movement of substances in and out of the cell.
genetic material
Genetic material
  • The prokaryotic Bacterial cell has no nucleus.
  • Its genetic material and D.NA are contained in a nucleoid.
ribosomes
Ribosomes
  • These are the smallest and most numerous of cell organelle.
  • Their purpose is protein synthesis for the cells own use.
  • They consist of protein and RNA.
  • They are located either free in the cytoplasm of attached to the RER.
flagellum
Flagellum
  • This is a rigid rotating tail.
  • It’s purpose is to propel the cell.
  • Clockwise rotation is what propels the cell forward, anticlockwise rotation causes a chaotic spin.
  • The rotation is powered by a H+ gradient across the cell membrane.
plasmid
Plasmid
  • A plasmid is a small circle of DNA.
  • Bacterial cells have a number of plasmids.
  • Plasmids are used to exchange DNA between bacterial cells.
capsule
Capsule
  • This is a kind of slime layer covering the outside of the cell wall.
  • It is composed of a thick polysaccharide.
  • It is used to stick cells together and as a food reserve.
  • It is also there to protect the cell from desiccation, and from chemicals.
good bye
GOOD BYE!
  • The excitement must have reached fever-pitch!