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Tetracyclines are narrow-spectrum agents that are effective against certain bacterial strains.

Select the correct response:

True

False

Answer :

Final answer:

Tetracyclines are broad-spectrum antibiotics, not narrow-spectrum agents, as they can treat a variety of bacterial infections. They work by inhibiting protein synthesis in bacteria. Therefore, the statement regarding their classification is false.


Explanation:

Tetracyclines and Their Spectrum of Activity

Tetracyclines are a class of antibiotics that inhibit protein synthesis in bacteria by binding to the 30S ribosomal subunit. Unlike bacteria that are treated with narrow-spectrum antibiotics, tetracyclines possess a broad spectrum of antibacterial activity. This means they are effective against a wide range of bacterial pathogens, including both gram-positive and gram-negative bacteria.

Although the original natural tetracyclines were derived from Streptomyces, several semisynthetic versions like doxycycline and tigecycline have been developed. These medications are often used in treating infections caused by a variety of bacteria.

Therefore, the statement that tetracyclines are narrow-spectrum agents that are effective against certain bacterial strains is False. In fact, they are broad-spectrum antibiotics and can be employed for various infections unless contraindicated by their potential side effects, which include phototoxicity and effects on developing teeth.


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