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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.
  • a)
    (i) Only
  • b)
    (ii) Only
  • c)
    (ii) and (iv)
  • d)
    (i), (iii) and (iv)
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
Which of the following statements regarding antibiotics is not correct...
Antibiotics are chemical substances secreted by certain microbes which inhibit the growth and development of other microbes. Most of them produced by actinomycetes and filamentous fungi. Some inportant antibiotics are tetracycline, chloramphenicol, steptomycin etc.
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Most Upvoted Answer
Which of the following statements regarding antibiotics is not correct...
Statement (i): Antibiotic is the attenuated microorganisms which in small concentrations, can kill or retard the growth of other harmful microorganisms.

This statement is incorrect. The definition provided for antibiotics is not accurate. Antibiotics are substances produced by living organisms, such as bacteria or fungi, that are capable of killing or inhibiting the growth of other microorganisms.

Statement (ii): Penicillin was the first antibiotic to be discovered by Alexander Fleming (1928) while working on bacterium Staphylococcus aureus.

This statement is correct. Alexander Fleming discovered penicillin in 1928 while working on the bacterium Staphylococcus aureus. He observed that a mold called Penicillium notatum produced a substance that killed the bacteria, leading to the discovery of penicillin.

Statement (iii): The full potential of penicillin as an effective antibiotic was established by Ernest Chain and Howard Florey.

This statement is correct. After Fleming's discovery, it was Ernest Chain and Howard Florey who successfully purified and tested penicillin, demonstrating its effectiveness in treating bacterial infections. They established the full potential of penicillin as an antibiotic and paved the way for its mass production and use in medicine.

Statement (iv): Fleming, Chain, and Florey were awarded the Nobel Prize in 1945.

This statement is correct. In recognition of their contributions to the development and application of penicillin, Alexander Fleming, Ernst Chain, and Howard Florey were jointly awarded the Nobel Prize in Physiology or Medicine in 1945.

Therefore, the correct answer is option (a) - (i) Only, as the definition provided for antibiotics in statement (i) is incorrect.
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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.a)(i) Onlyb)(ii) Onlyc)(ii) and (iv)d)(i), (iii) and (iv)Correct answer is option 'A'. Can you explain this answer?
Question Description
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