Most have no diaphragm and do not break

Longbacterium, Brevibacterium

Monococci, diplococci, streptococci, streptococci, Sarcina and staphylococci, etc.

Those with a spiral length of less than 1 week are called vibrios

Those with a spiral length of 1 to 6 weeks and 2 to 6 flagella are called spirillum

Those with spirals of more than 6 weeks and without flagella are called spirochetes

cell wall

cell membrane

Nuclear region and plasmid

Cytoplasm and its contents

endomembrane system

flagellum

pili

sex pili

sugar quilt

Spores, paraspore crystals

Reproduction mainly by binary fission

As an important basis for strain identification and judgment of purity

feature