南京师范大学：《微生物学》课程PPT教学课件（英文版）Chapter 2 Prokaryotic Microorganism

Chapter 2 Prokaryotic Microorganisms

Chapter 2 Prokaryotic Microorganisms

Purpose Predominate basic concepts of the prokaryotic microorganism. Study the basic form,cell structure, reproduction method and cultural characteristics of primary prokaryotic microorganisms. Comprehend the close relation between each kind of prokaryotic microorganism and humanity production and our life

Purpose Predominate basic concepts of the prokaryotic microorganism. Study the basic form, cell structure, reproduction method and cultural characteristics of primary prokaryotic microorganisms. Comprehend the close relation between each kind of prokaryotic microorganism and humanity production and our life

What is the prokaryotic microorganism? It is an single-celled organism which doesn't have a nuclear membrane outside the cell nucleus and only has the bare DNA called as the nuclear area.It is entitled the generalized bacterium. Main sorts of the prokaryotic microorganism According to shape characteristic:bacteria (narrow sense),actinomycete cyanobacteria ,mycoplasma ,ricket tsia chlamydia and spirochete. According to physiological and biochemical Indices and molecular biological characteristics true bacteria and Archaeum

What is the prokaryotic microorganism? It is an single-celled organism which doesn’t have a nuclear membrane outside the cell nucleus and only has the bare DNA called as the nuclear area. It is entitled the generalized bacterium. Main sorts of the prokaryotic microorganism ： According to shape characteristic: bacteria (narrow sense),actinomycete ,cyanobacteria ,mycoplasma ,ricket tsia ,chlamydia and spirochete. According to physiological and biochemical Indices and molecular biological characteristics :true bacteria and Archaeum

Section 1 Bacteria Bacteria (narrow sense)is a kind of procaryote.Its special characters are that thin and short cell,simple structure,tough cell wall,fissiparity of two parts and stronger hydrophily trait

Section 1 Bacteria Bacteria (narrow sense) is a kind of procaryote. Its special characters are that thin and short cell, simple structure, tough cell wall, fissiparity of two parts and stronger hydrophily trait

Bacteric locations:aerosphere、water、soil、in the body of propagation Bacteric breed and quantity various kinds,high numbers The influence of bacteria to human society: 1.harmful influence:it's a kind of propagation pathogens which cause the putrescence of food and goods 2.wholesome effect:the manufacture of bacteria zymolytic products,agro-biological pesticide the product of bacterial manure,bacterial leaching microbial preparation,sewage management and so on

Bacteric locations: aerosphere 、water、soil、in the body of propagation Bacteric breed and quantity : various kinds, high numbers The influence of bacteria to human society: 1. harmful influence: it’s a kind of propagation pathogens which cause the putrescence of food and goods . 2.wholesome effect: the manufacture of bacteria zymolytic products, agro-biological pesticide ,the product of bacterial manure, bacterial leaching , microbial preparation, sewage management and so on

1.Modality and bulk of bacteria (1)Modality of bacteria Basic form of bacteria unit: globularity,rod shape and twist

I. Modality and bulk of bacteria （1） Modality of bacteria Basic form of bacteria unit: globularity、rod shape and twist

0 88 0 (h) (c) (d) (c (r) (a)monococcus (b)diplococcus (c)tetracoccus (d)sarcina (e)staphylococcus(f)streptococcus Different shapes coccus Different shapes bacilus (a)coccobacillus (b)single bacilus (c)diplobacillus (a) G6) (e) (d)streptobacillus Different shapes spirochete (a)spirillum (b)leptospira(c)vibrio 6

(a) monococcus (b) diplococcus (c) tetracoccus (d) sarcina (e) staphylococcus (f) streptococcus Different shapes coccus Different shapes bacilus (a) coccobacillus (b) single bacilus (c) diplobacillus (d) streptobacillus Different shapes spirochete (a) spirillum (b) leptospira (c) vibrio

cocci

cocci

bacilli spirillum

bacilli spirillum

Special types of bacteria

Special types of bacteria