Paragraftan ÇıkarımSoru #10412
Wonders of Oceanic Bioluminescence
Bioluminescence—the production and emission of cold light by living organisms—is ubiquitous in oceanic environments, particularly in the bathypelagic zone between 1,000 and 4,000 meters below sea level. In this perpetually sunless abyss, over 75 percent of marine species possess light-emitting capabilities. The fundamental biochemical reaction involves the enzyme luciferase catalyzing the oxidation of a pigment molecule called luciferin, releasing energy almost entirely as visible light with negligible thermal dissipation. Marine fauna employ bioluminescence for diverse adaptive functions. Predatory anglerfish dangle glowing esca lures above their gaping jaws to attract unsuspecting prey. Other species utilize counterillumination, emitting ventral light that matches the intensity of faint downwelling sunlight, thereby erasing their silhouette from predators hunting below. Furthermore, some squids discharge bioluminescent ink clouds to blind attackers and facilitate escape, demonstrating how living light is essential for survival in the deep sea. It can be inferred from the passage that the light produced during bioluminescence is called "cold light" because ----.
- A)almost no thermal energy (heat) is lost or generated during the biochemical reaction
- B)it only occurs in sub-zero polar ocean temperatures
- C)it causes surrounding seawater to freeze into crystalline ice
- D)predators cannot detect any photons emitted in cold water
- E)it relies entirely on external refrigeration mechanisms
Cevabı ve çözümü göster
Doğru cevap: A) almost no thermal energy (heat) is lost or generated during the biochemical reaction
Çözüm: "negligible thermal dissipation" (ihmal edilebilir ısı kaybı/yayımı) ifadesi, enerjinin neredeyse tamamının görünür ışığa dönüştüğünü ve ısı yaymadığını gösterir. Doğru cevap A'dır.