The following sentences are from a paragraph about the history of green fluorescent protein (GFP). Arrange these sentences in the most logical sequence to form a cohesive, unified paragraph, ensuring that the introduction and conclusion are placed effectively.
- 1In 1962, the Japanese organic chemist Osamu Shimomura isolated a curious, glowing protein from the outer canopy of the jellyfish *Aequorea victoria*, though the revolutionary biochemical potential of this luminescent molecule remained entirely unrecognized by the wider scientific community during these early stages of bioluminescence research.
- 2Decades later, pioneering geneticists and molecular biologists realized that this unique substance, which they formally named green fluorescent protein (GFP), could be genetically fused to other target proteins, acting as a microscopic lantern to track complex intracellular movements and macromolecular interactions in real time.
- 3By successfully expressing this glowing tag within living host organisms, researchers were finally able to bypass traditional, destructive chemical staining techniques, allowing them to visualize previously invisible microscopic structures and live cellular activities without disrupting or killing the cells under observation.
- 4This non-invasive imaging breakthrough immediately revolutionized dynamic scientific fields such as developmental neurobiology and oncology, enabling the detailed mapping of complex neural pathways in developing embryos and the step-by-step monitoring of malignant tumor metastasis.
- 5Ultimately, GFP transitioned from an obscure marine curiosity to an indispensable diagnostic and research powerhouse, cementing its enduring legacy as one of the most significant, Nobel Prize-winning developments in the history of modern biotechnology.
Answer
The correct chronological and logical order of the paragraph is: the discovery of the protein in the jellyfish, the realization decades later of its fusion capabilities and naming it GFP, the description of how expressing this tag allowed live cell visualization, the subsequent revolution of specific scientific fields, and the concluding summary of its global biotechnology legacy.
The correct order follows a clear chronological and logical progression. It begins by introducing the discovery of the bioluminescent protein in 1962. It then transitions decades later to the formal naming of GFP and the discovery of its genetic fusion. Next, it explains the mechanism of expressing this tag to visualize cells. After that, it details the specific scientific fields revolutionized by this imaging breakthrough. Finally, it concludes with a summary of GFP's global legacy as a biotechnology powerhouse.
Step-by-Step Solution
Key Concept
Opening and Concluding Sentences