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a) The E. coli population has genetic variation. b) The selective agent is streptomycin. c) The mutation resulting in streptomycin resistance is random. d) E. coli changes its gene structure to become antibiotic resistant in the presence of streptomycin. a) The E. coli population has genetic variation.
Chapter 5 Text Questions. 7 terms. CrystalPreston. ... When was streptomycin discovered? ... United States; United Kingdom; Canada (French)
Microbiology Lab Quiz 6. 39 terms. Omar03120000. ... Coined term antibiotic Discovered/developed streptomycin. ... United States; Canada; United Kingdom;
History. Streptomycin was first isolated on October 19, 1943, by Albert Schatz, a PhD student in the laboratory of Selman Abraham Waksman at Rutgers University in a research project funded by Merck and Co. Waksman and his laboratory staff discovered several antibiotics, including actinomycin, clavacin, streptothricin, streptomycin, grisein ...
- 84% to 88% IM (est.) 0% by mouth
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For decades, hundreds of thousands of cases had been reported every year, but by 1953, only 84,000 new cases of tuberculosis were reported in the United States. The death rates associated with the disease also dropped off precipitously: while in 1930, 70 out of every 100,000 people in the United States died from the disease, by 1954 only 10 out ...
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Streptomycin was discovered by American biochemists Selman Waksman, Albert Schatz, and Elizabeth Bugie in 1943. The drug acts by interfering with the ability of a microorganism to synthesize certain vital proteins.
Jul 4, 2023 · HHS. USA.gov. Streptomycin is the first discovered aminoglycoside antibiotic, originally isolated from the bacteria Streptomyces griseus. It is now primarily used as part of the multi-drug treatment of pulmonary tuberculosis. It has additional activity against several aerobic gram-negative bacteria.
