Classification and comparison of bacteria--Haibo Biology

(1) Unit of measurement for bacteria

Micron

(2) Morphology of bacteria

Divided into three forms of cocci, bacillus and spirilla.

1. Cocci include spherical, kidney-shaped, bean-shaped, spear-shaped, etc., with a diameter of 0.8-1.2 microns, in a variety of arrangements such as double-ball, chain, grape, etc.

2. There are many types of bacilli, and the length and thickness are quite different. There are rod-shaped, club-shaped, rod-shaped and shuttle-shaped, and there are various arrangements such as chain-shaped, branched, and fence-shaped.

3. Spiral bacteria are divided into:

â‘  Vibrio, which is arc-shaped or comma-shaped, with only one bend, such as Vibrio cholerae;

â‘¡Spirulina, the bacterial body is bent by more than two, and the length is 3 to 6 microns, such as hot bite spirillus;

â‘¢ Helicobacter, spirally curved, 2.5 to 4.0 microns long, such as Helicobacter pylori;

â‘£ Campylobacter, U-shaped, S-shaped, etc., such as Campylobacter jejuni and Campylobacter coli.

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