Bishal Paul posted an Question
August 22, 2021 • 21:12 pm 30 points
  • CSIR NET
  • Life Sciences

What are the different methods used in bacterial classification. explain with diagram

What are the different methods used in bacterial classification.Explain with diagram

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  • Priya sarda

    Phenotypic Methods of Classifying and Identifying Microorganisms. Classification seeks to describe the diversity of bacterial species by naming and grouping organisms based on similarities. ... These plasmids can be transferred between cells through bacterial conjugation. In Genotype methods, Genotypic traits of an organism are those encoded within its genetic material, the genome are studied

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  • Priya sarda best-answer

    Genotypic Methods. The genotypic methods access the genetic elements from chromosomal and/or extra-chromosomal DNA allowing differentiation among close related strains. They include multiple gel electrophoresis and sequence-based techniques

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    Than how I have to write in my exam if it comes

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    wait

  • Priya sarda

    Different morphological characteristics such as size, shape, staining characterstics, flagellation etc are used to clas-sify the eubacteria. Size – Bacteria are microscopic. Normally their diam-eter varies from 0.2 to 1.5 micron and length varies from 2 to 10 micron and the length of rod-shaped or bacillus bacteria varies from 0.3 to 15 micron. The largest bacterium is Baggiatoa mirabilis. It’s diameter is 16 to 45 micron and length is 80 micron or more. Shape – On the basis of shape, the bacteria are of following types 1. Coccus or spherical bacteria-They are spherical and their diameter is 0.5 to 1.25 micron. They are non- flagellated and are of following types (i) Micrococci – Solitary Example: Micrococcus agilis, Micrococcus aureus etc. (ii) Diplococcus – Two or in pair Example: Diplococcus pneumoniae (iii) Tetracoccus – Four round cells Example: Micrococcus tetragcnus Neisseria etc. (iv) Streptococcus – They are chajn shaped Example: Sireptococcus lacts (v) Staphylococcus – Round and forn in grape – like clusters. Example: Siaphylococcus aurcus (vi) Sarcinae – Spherical bacteria Example: Sarcina luteus etc. 2. Bacillus or Rod shaped bacteria (i) Monobacillus – Single rod-like bacteria. Example: Bacillum (ii) Diplobacillus – Two rods arranged side by side with each other. Example: Coryne bacterium diptherae (iii) Streptobacillus – Rods arranged in chains. Example: Bacillum iuberculosis 3. Spiral or cuboidal bacteria They are spiral or helical shaped and flagellated. Example: Spirillum minus, spirillum volutans. 4.Vibrio or coma They arc curved-rod shape or comma shape and monoflagcllated. Example: vibrio cholerae 5.Filanientous bacteria – They arc very long thin filament-shaped. Some of them form branching filaments ExampIe: Beggiatoa. Cladothrix, Leptothrix etc. 6.Pleoniorphic bacteria – They are able to alter theirshape or size in response to enironrnental conditions.Hence. they are found m more than one form. For example: Acetobactor. Minute or long rod(Bascillus) or chain of minute rods (Streptobacillus)

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    Here in the question it says different method if I am not wrong the methods has to be phenotypic method genotypic method is it??

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    Phenotypic Methods of Classifying and Identifying Microorganisms. Classification seeks to describe the diversity of bacterial species by naming and grouping organisms based on similarities. ... These plasmids can be transferred between cells through bacterial conjugation. Genotypic Methods. The genotypic methods access the genetic elements from chromosomal and/or extra-chromosomal DNA allowing differentiation among close related strains. They include multiple gel electrophoresis and sequence-based techniques

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