8 grade science> what is a gram-negative organism? please ...

what is a gram-negative organism? please provide examples along.

Rikhil , 8 Years ago

Grade 8

6 Answers

Yudish varma

Last Activity: 8 Years ago

The bacteria and other microbes are classified into Gram-positive & Gram-negative based on a staining technique introduced by Christian Gram.the Staining method will be learnt in higher classes.Examples are most pathogens like Salmonella,Vibrio,Mycobacterium etc.Gram -positive ones include Strepto and Staphylococcus.

Scholr Boy

Last Activity: 7 Years ago

Gram-negative bacteria are bacteria that do not retain the crystal violet stain used in the gram-staining method of bacterial differentiation.

manu

Last Activity: 7 Years ago

In gram negative bacteria cell wall is made up of teichoic acid . example- cyanobacteria

This bacteria is introduced by christian gram . He used crystal violet dye to identify gram negative and gram positive

jayprakash pal

Last Activity: 7 Years ago

Gram negative cell walls contain a thin peptidoglycan layer (without teichoic acids) that is surrounded by a thick plasma membrane. Gram negative bacteria will stain red because the thin peptidoglycan layer is surrounded by the plasma membrane and thus will not stain with crystal violet.Can be decolorized to accept counterstain (safranin) and stain pink or red

REENU SIVADARSHINI.M

Last Activity: 6 Years ago

GRAM NEGATIVE BACTERIA :

THEY ARE BACTERIA THAT DO NOT RETAIN THE CRYSTAL VIOLET STRAIN USED IN GRAM STRAINING METHOD OF BACTERIAL DIFERENTIATION.

EXAMPLES :

MANY PATHOGENIC BACTERIA LIKE PSEUDOMONAS AERUGINOSA ECT

Atharv lomte

Last Activity: 6 Years ago

Bacteria can be divided into two groups on the basis of the differences in the cell envelopes and the manner in which they respond to the staining procedure developed by Gramm viz.,

1)THOSE THAT TAKE UP THE GRAM STAINS ARE GRAM POSITIVE and those who doesn't take up are called as GRAM NEGATIVE.

ANSWERED BY:-

Atharv Balajirao Lomte.

Student Class 8.