Okuma AnlamaSoru #9353
Synthetic Biology and Engineered Enzymes
Synthetic biology represents a revolutionary paradigm shift from merely observing biological systems to actively designing and programming them from the ground up. By utilizing artificial intelligence tools such as AlphaFold to predict three-dimensional protein structures with atomic accuracy, bioengineers can now design de novo enzymes that have no evolutionary precedents in nature. One of the most promising applications of these custom catalysts is the rapid breakdown of persistent synthetic pollutants, particularly polyethylene terephthalate (PET) plastics, into non-toxic organic monomers within hours rather than centuries. Additionally, engineered microbial strains are being programmed to synthesize critical pharmaceutical compounds, bio-jet fuels, and nitrogen-fixing agricultural fertilizers directly from atmospheric carbon dioxide. However, this immense technological capability raises profound biosecurity and ethical questions regarding accidental ecological release and the synthetic creation of novel pathogens. The word "precedents" in the passage refers to ----.
- A)earlier examples or counterparts
- B)financial profits or earnings
- C)dangerous toxins or poisons
- D)governmental regulations or laws
- E)chemical solvents or catalysts
Cevabı ve çözümü göster
Doğru cevap: A) earlier examples or counterparts
Çözüm: "Precedent" emsal, geçmiş örnek, önceki benzer (earlier examples, historical counterparts) demektir. "No evolutionary precedents" doğada geçmişte benzeri/örneği bulunmayan anlamına gelir. Doğru cevap A'dır.