Bacteriums are prokaryotic organisms, and can be classified into two different types: Gram + and Gram - due to the different structures in the cell walls.
A bacterium has a cell membrane, not a cell wall.
A bacterium typically has a cell membrane, flagellum for movement, and a cell wall for structure and protection.
Bacterium is a prokariyote.Others are eukariyotic cells.
The smallest type of cell in the world is the mycoplasma bacterium with only a diameter of 10µm (micrometre).
Bacterium has prokaryotic cells- cells that have no membrane-bounded organells.
lymphocytes (a type of white blood cell) produce antibodies which will attach themselves to foreign particles. so a detected bacterium will have many antibodies surrounding it and stuck to it. antibodies which have attached themselves to the bacterium will send a signal to the phagocytes (another type of white blood cell) to come and 'eat'. so the phagocytes will engulf the bacterium, and secrete lysozyme (an enzyme which cuts up everything that comes into contact with it) to digest the bacterium, killing it. thank you for that :poopyloopy dark orbit.
intracellular.
The smallest type of cell in the world is the mycoplasma bacterium with only a diameter of 10µm (micrometre).
Bacteria belong to a group of cells known as procaryotic cell. procaryotic cells only exist in single cell lifeforms such as amoebas and bacteria.
Cell Wall
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Antibodies are secreted by a special group of white blood cells called lymphocytes. Each type of cell (including bacteria) has a unique protein on its cell membrane - an antigen. If a lymphocyte does not recognise a particular antigen, it will assume that the cell (or bacterium) is foreign and hostile. This is what antibodies respond to - the stimulus as the result of an unfamiliar cell. The antibodies attach to the antigens and kill the cell, or bacterium.