What are antibiotics and how and why do they work? Which types of organisms are killed by antibiotics, and why not others?
How do antibiotics work?
Which processes do they stop?
Difference between i) bacteriostatic and bactericidal and ii) broad and narrow spectrum?
Include at least one in-text citation to show where you got your information from.
A full list of references in a consistent style is required at the end of the document.

Antibiotics work by blocking vital processes in bacteria, killing the bacteria or stopping them from multiplying. This helps the body's natural immune system to fight the bacterial infection. Different antibiotics work against different types of bacteria.

Antibiotics are chemicals that kill or inhibit the growth of bacteria and are used to treat bacterial infections. They are produced in nature by soil bacteria and fungi, Antibiotic resistant bacteria are bacteria that are not controlled or killed by antibiotics. They are able to survive and even multiply in the presence of an antibiotic. Most infection-causing bacteria can become resistant to at least some antibiotics.

Antibiotics work by blocking vital processes in bacteria, killing the bacteria or stopping them from multiplying. This helps the body's natural immune system to fight the bacterial infection. Different antibiotics work against different types of bacteria.

Often called bacteriostatic antibiotics, they prevent nutrients from reaching the bacteria, which stops them from dividing and multiplying. Because millions of bacteria are needed to continue the disease process, these antibiotics can stop the infection and give the body's own immune system time to attack.

Narrow-spectrum antibiotics target a few types of bacteria. Broad-spectrum antibiotics target many types of bacteria. Both types work well to treat infections. But using broad-spectrum antibiotics when they're not needed can create antibiotic-resistant bacteria that are hard to treat.

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Jeffrey Gerber, MD, PhD

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