Tag Archives: student

How antibiotics act selectively against bacteria

How can antibiotics act selectively against bacteria? Why may antibiotics have no effect on bacteria? Describe the main bacterial antibiotic resistance mechanisms. Antibiotics are selectively toxic against bacteria because bacteria differs greatly from human cells, mainly the bacteria have cell … Continue reading

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Straphylococci

Staphylococci are gram +ve cocci that form irregular bunches of cocci that resembles bunches of grapes. They occur as commensals of skin and mucosa, and some act as opertunistic pathogen causing pyogenic infections. Staphylococci are non motile and catalase positive. … Continue reading

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Non specific host defence- bacteria overcome it & how specific interact.

The non specific immune system consists of barriers like skin and mucous membranes. The immune system is non specific meaning it will react the same way weather it’s the first or second time its being attacked. The non specific immune … Continue reading

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