Hans Christian Gram, a Danish bacteriologist, invented the Gram staining technique in 1884. Gram negative bacteria have an exterior lipid membrane, which is why they are called diderms when referring to their physical structure. When referring to their structure rather than their staining properties, Gram positive bacteria are called monoderms because they lack an outer lipid membrane. Gram positive bacteria have a thick peptidoglycan layer without an outer lipid membrane, whereas Gram negative bacteria have a thin peptidoglycan layer with an outer lipid membrane. This is due to the cell wall’s capacity to hold the crystal violet stain used in the Gram staining method, which can then be seen under a light microscope. The thickness of the peptidoglycan layer and the presence or absence of the outer lipid membrane are the two essential factors that cause Gram positive and Gram negative organisms to have different visibility properties. Difference in structure of Gram positive vs Gram negative bacteria The structure of bacterial cell walls is one such important classification, which determines whether a bacterium is Gram positive or Gram negative. Bacterial species can be divided into broad groupings based on the trait being researched, but when combined, this information can substantially reduce the probable identities. cocci, for example), their ability to grow in specific nutrients, and whether they prefer high or low oxygen settings. This includes things like their morphology (bacilli vs. Even without delving into the deep gritty of molecular biology, there are phenotypic variations between bacteria groups that can be utilised to distinguish them. Molecular techniques such as PCR, quantitative PCR, genome sequencing, and mass spectrometry can be used to distinguish bacterial species and even specific strains. Differentiating bacterial species is crucial for a variety of reasons, including detecting infection and ensuring food safety, as well as determining which species gives a cheese its unique flavour.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |