Tag Archives: streptococci

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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Streptococci

Streptococci are gram +ve cocci that form chains of different lengths.. Streptococci are facultative anaerobes and require the addition of blood or serum to culture media. Streptococci are a group of bacteria which can cause pyogenic infections in many animal … Continue reading

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