Antibiotics kill or inhibit bacteria. The real revolution in antibacterial therapy began with the discovery of Alexander Fleming. Antibiotics have either bactericidal effect or a bacteriostatic effect on microbes. The broad spectrum antibiotic is/are:

vancomycin

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ofloxacin

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chloramphenicol

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All

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Solution

The correct option is D All
Antibiotics which kill or inhibit a wide range of Gram-positive and Gram-negative bacteria are said to be broad spectrum antibiotics.
Chloramphenicol, isolated in 1947, is a broad spectrum antibiotic. It is rapidly absorbed from the gastrointestinal tract and hence, can be given orally in case of typhoid, dysentery, acute fever, certain form of urinary infections, meningitis and pneumonia. Vancomycin and ofloxacin are the other important broad spectrum antibiotics.

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Similar questions

Q. Match the column I with column II and mark the appropriate choice.

	Column I		Column II
(A)	Bacteriostatic	(i)	Crucial to body's communication process
(B)	Bactericidal	(ii)	Inhibit growth of microbes
(C)	Narrow spectrum antibiotics	(iii)	Kill microbes
(D)	Receptors	(iv)	Effective against single disease

Q. The golden age of antibiotics began in 1928 with Sir Alexander Fleming's discovery of an antibacterial compound he called:

Which of the following statements are incorrect about penicillin?
(a) An antibacterial fungus
(b) Arnpicillin is its synthetic modification
(c) It has bacteriostatic effect
(d) It is a broad spectrum antibiotic

Q. Assertion :Broad spectrum antibiotics are produced by streptomyces Reason: They can destroy microorganisms by inhibiting DNA replication or protein synthesis.

Q. Which of the following statements regarding antibiotics is not correct?

i) Antibiotic is the attenuated microorganisms which in small concentrations, can kill or retard the growth of other harmful microorganisms.
ii) Penicillin was the first antibiotic to be discovered by Alexander Fleming (1928) while working on bacterium Staphylococcus aureus.
iii) The full potential of penicillin as an effective antibiotic was established by Ernest Chain and Howard Florey.
iv) Fleming, Chain, and Florey were awarded the Nobel Prize in 1945.

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