Question

How is the Gram stain used to classify bacteria? How do antibiotics inhibit the growth of bacteria? Explain how carriers play an important role in the transmission of pathogens. Jan acquired a MRSA infection during a stay at a rehabilitation facility. Jan’s physician tells her that her MRSA was caused by S. aureus. How would you explain to Jan what S. aureus is and how it can cause diseases?

Answer 1

ANS)

* The Gram staining is the usual method to transform two big categories of bacteria on the basis of their dissimilar cell wall components.Gram stain method differentiates among Gram positive and Gram negative categories by shading the cells with red color and violet color.The Gram positive bacteria usually spot violet because of the existance of a dense coating of peptidoglycan in the cell wall,that keeps the crystal violet these particular cells are marked with.On the other hand the gram negative bacteria are marked red,that is ascribed to a narrow peptidoglycan wall and that will not maintain the crystal violet.

* Almost all the antibiotics act by harming bacteria cell wall.One of the best example is penicillin.Precisely,the medicine stop the bacteria from manufacuring a molecule in cell wall known as the peptidoglycan and that gives the wall accompanied by power that requires to remain alive in host(human).Some of the antibiotics stop the wealthy replication of DNA.A category of antimicrobials known as the quinolones aims the DNA gyrase,this is an major enzyme which supports unravel DNA for the duplication.

* It is very correct that the carriers play an major part in the transfer of pathogens.In the case of contagious pathogens like the streptococcus pneumoniae,some of the hosts sometimes transfer the pathogens and carry to another and so far will not show signs and symptoms by itself.This non symptomatic carriers helps to the scattering of disorder but move mainly undiscovered and because of that erode attempts to manage transference.Normally the hosts are known as the carriers and these host may be contagious for small interval of time in transitory carriers or on to a extended interval of time in chronic carrier.

* The staphylococcus aureus is a kind of gram positive bacteria which is seen on the epidermis or dermis and also in nasal passageway of small portion of humans.This is a anaerobe and because of that they can make energy both in the availability or unavailability of oxygen.

* The staphylococcus aureus normally work as commensal of human being microbe and this may also be an selfish pathogen,arising as a usual reason for skin infections involving ulcer,respiratory diseases like the inflammation of nasal sinus.The pathogenic strains frequently encourage diseases by forming virulence factor like the powerful protein toxins and utterance of cell surface protein which joins and deactivates the antibodies.

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