Question

⛄_⛹ ᴇᴀᴜsᴜʀᴇ ʜᴇʀᴇ! ⛷__⛄

Explain the Classification of Bacteria according to C. Gram!

Also attach the picture of these Extensions of Bacteria:-

•Pilus
•Fibriae!

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Answer 1

⭕$\huge{\bold{\underline }{\underline}{Classification\: of\:Bacteria\: according\: to\: C.\:Gram}}$

⏭$\huge\math{It\: is\: classified\: into\: two\: types: }$

▶$\huge\mathcal\black{Gram\:positive}$

▶$\huge\mathcal\black{Gram\:negative}$

➡$\huge\boxed{\fcolorbox{white}{pink}{Gram\:positive:}}$

⏹Prokaryotes are identified as gram-positive if they have a multiple layered matrix of peptidoglycan forming the cell wall.

⏹Crystal violet, the primary stain of the Gram stain procedure, is readily retained and stabilized within the matrix, causing gram-positive bacteria to appear purple.

⏹The class Actinobacteria comprises the high G+C gram-positive bacteria which have more than 50% of guanine and cytosine nucleotides in their D. N. A.

⏹The class Bacilli comprises low G+C gram-positive bacteria which have less than 50% of guanine and cytosine in their D. N. A.

⏹Actinobacteria is the taxonomic name of the class high G+C gram-positive bacteria. This class includes the genera Actinomyces, Arthrobacter, Corynebacterium,Frankia,Gardnerella,Micrococcus,Microbacterium.

⏹ Examples of high G+C gram-positive bacteria are Mycobacterium tuberculosis, which causes tuberculosis; M.Leprae, which causes leprosy(Hansen's disease) and Corynebacterum diptheriae which causes diphtheria.

⏹Low G+C gram-positive bacteria include rod-shaped and coccus-shaped species including the genera Bacillus and Staphylococcus.

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➡$\huge\boxed{\fcolorbox{white}{pink}{Gram\:negative:}}$

⏹Gam-negative bacteria are those which do not retain crystal violet stain .

⏹These are found everywhere, in virtually all environment on Earth that support life.

⏹An inner cell membrane is present (cytoplasmic).

⏹They do not form spores.

⏹Teichoic acid or lipoteichoic acid is absent.

⏹A thin peptidoglycan layer is present.

⏹Examples of gram-negative bacteria are Escherichia coli as well as many pathogenic bacteria.

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