Bacterial Morphology and Structure Xiao-Kui Guo PhD http://basic.shsmu.edu.cn/passw/micro2/index.asp SIZE OF BACTERIA Unit for measurement : Micron or micrometer,μm: 1μm=10-3mm Size: Varies with kinds of bacteria, and also related to their age and external environment.
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Xiao-Kui Guo PhD
Varies with kinds of bacteria, and also related to their age and external environment.
Essential structures cell wall 细胞壁cell membrane 细胞膜Cytoplasm 细胞质nuclear material核质
Cell (inner) membrane
1884: Christian Gram: First publication for the Gram stain method)
Editor's note: I would like to testify that I have found the Gram method to be one of
the best and for many cases the best method which I have ever used for staining
Gram, C. 1884. Ueber die isolirte Farbung der Schizomyceten in SchnittÄund Trockenpraparaten. Fortschritte der Medicin, Vol. 2, pages 185-189.
SPA / M POTEIN
Plasmids are small，circular/line，extrachromosomal，double-stranded DNA molecules。They are capable of self-replication and contain genes that confer some properties，such as antibiotic resistance，virulence factors。Plasmids are not essential for cellular survival.Plasmid
Inclusions of Bacteria
Some bacterial species are mobile and possess locomotory organelles - flagella. Flagella consist of a number of proteins including flagellin