Paragraf tamamlamaSoru #10052
The human circadian rhythm is an internal biochemical clock synchronized primarily by environmental light cues. Specialized intrinsically photosensitive retinal ganglion cells in the eye detect blue wavelengths and signal the brain's suprachiasmatic nucleus. ----. In modern societies, prolonged exposure to blue-light-emitting smartphones and LED screens late at night suppresses this nocturnal melatonin surge, disrupting restorative sleep cycles.
- A)Solar flares can induce minor fluctuations in terrestrial geomagnetic fields without affecting human sleep
- B)Caffeine molecules block adenosine receptors in the cerebral cortex, artificially delaying feelings of drowsiness
- C)Shift workers often consume high-protein meals during morning hours to maintain steady glucose levels
- D)In response to falling twilight illumination, this neural master clock instructs the pineal gland to synthesize and release melatonin
- E)Most mammalian species have evolved nocturnal foraging behaviors to avoid apex daytime predators
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Doğru cevap: D) In response to falling twilight illumination, this neural master clock instructs the pineal gland to synthesize and release melatonin
Çözüm: Işığın azalmasıyla beynin epifiz bezine melatonin salgılatması ("instructs pineal gland to release melatonin"), sonraki cümledeki gece ekran ışığının melatonini baskılamasıyla kusursuz bir sebep-sonuç bağı oluşturur. Doğru cevap D'dir.