Okuma AnlamaSoru #11471
Illuminating the Deep Ocean
In the pitch-black abyss of the deep ocean, where sunlight never penetrates, bioluminescence is the dominant mode of visual communication. Over seventy percent of all deep-sea species—ranging from gelatinous siphonophores to predatory anglerfish—possess the ability to generate living light. Unlike human incandescent lighting, which wastes ninety percent of its energy as thermal radiation, bioluminescence is remarkably cold, converting nearly all chemical energy directly into photons via the oxidation of luciferin catalyzed by the luciferase enzyme. Creatures exploit this luminescence for sophisticated behavioral functions: deep-sea anglerfish dangle glowing bioluminescent lures to entice unsuspecting prey directly toward their jaws, while hatchetfish emit downward-directed blue light from ventral photophores to match downwelling sunlight, effectively cloaking their silhouettes from apex predators below. According to the passage, the biochemical light emitted by marine organisms ----.
- A)is toxic to every predator that catches a bioluminescent prey animal
- B)burns surrounding ocean water to extreme boiling temperatures
- C)requires direct electrical currents generated by volcanic submarine fissures
- D)occurs only when organisms are completely exposed to bright midday sunlight
- E)is produced with near one-hundred percent energetic efficiency without wasting heat
Cevabı ve çözümü göster
Doğru cevap: E) is produced with near one-hundred percent energetic efficiency without wasting heat
Çözüm: Metinde biyolüminesans ışığının neredeyse %100 verimle üretildiği ve ısı kaybı yaşanmadığı (soğuk ışık olduğu) belirtilmiştir. Doğru cevap E'dir.