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Directions: Read the passage carefully and answer the questions that follow.


One of the most significant medical breakthroughs in history was the discovery of penicillin by Sir Alexander Fleming. In 1928, Fleming, a Scottish bacteriologist, noticed that a mold called Penicillium notatum had contaminated one of his bacterial cultures. To his surprise, he observed that the bacteria near the mold had been killed.

Fleming's observation led to the realization that the mold produced a substance with antibacterial properties, which he named penicillin. However, it took several more years of research and experimentation to isolate and purify the penicillin substance for medical use.

Penicillin proved to be a highly effective antibiotic, capable of killing a wide range of bacteria. It was first used to treat bacterial infections during World War II and had a significant impact on reducing mortality rates among wounded soldiers.

The discovery of penicillin revolutionized the field of medicine, opening the door to the development of many other antibiotics. It marked the beginning of the era of antibiotics, which transformed the treatment of infectious diseases and saved countless lives.

Question for Practice Test Reading Comprehension - 15
Try yourself:The passage is mainly about:
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Question for Practice Test Reading Comprehension - 15
Try yourself:What did Fleming observe when he noticed the contamination in his bacterial cultures?
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Question for Practice Test Reading Comprehension - 15
Try yourself:What did Fleming name the substance produced by the mold?
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Question for Practice Test Reading Comprehension - 15
Try yourself:How did penicillin impact mortality rates during World War II?
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Question for Practice Test Reading Comprehension - 15
Try yourself:What did the discovery of penicillin lead to?
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