Bacteria Cell Structure

Tuesday, August 18, 2020


Structures of a bacteria cell

A bacteria cell is a prokaryotic cell. This means that it will not have an organized nucleus nor membrane-bound organelles. 
What is a bacteria cell made up of?
 
A bacteria cell is a prokaryotic cell which means it does not have a nucleus or membrane-bound organelles.
Bacteria are made up of a single cell and reproduce by fission or by forming spores.
Many times you will see bacteria cells in colonies.
Here are several bacteria cells together viewed with an electron microscope.

bacteria cells

A bacteria cell has an outer covering called a capsule or a slime layer. Bacteria with a thick outer capsule are called gram-positive, and bacteria with a thin outer covering are gram-negative.
In addition, bacteria have a cell wall and a cell membrane which makes up the inner layer of this outer covering.
Next, you will find the cytoplasm inside a bacteria cell. It is a liquid substance and the location of many biochemical reactions.
You will also find ribosomes inside a bacteria cell.
Some are found in the cytoplasm and others are attached to the inner layer of the capsule or the cell membrane.
You will also find genetic material inside a bacteria cell.
You will find most of it in a nucleoid which is a single strand of DNA that is folded and the genetic material is also found in circular strands of DNA called plasmids. Remember, bacteria do not have an organized nucleus.
In addition, you will find gas vacuoles and some bacteria have a whiplike tail called a flagellum. Some bacteria have pili which are small fibers that sprout from the cell surface and help the bacteria attach to certain surfaces.

structures of bacteria
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