Bacteriostatic and Bactericidal

Biology Unit 4

Bacteriostatic and Bactericidal

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Biology Unit 4
Revision Notes
Topic 6: Infection, Immunity and Forensics
17. Distinguish between bacteriostatic and
bactericidal antibiotics.
A broad-spectrum antibiotic can be used to treat a wide range of infections.
A narrow-spectrum antibiotic is only effective against a few types of bacteria.
A bactericidal antibiotic kills the bacteria. It usually either interferes with the formation of
the bacterium's cell wall or its cell contents. Penicillin is a bactericidal antibiotic.
A bacteriostatic antibiotic stops bacteria from multiplying
Text Book: p.107


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