Shortened sleep-waking cycles overlook the fact that sleep
A)must match a three to one ratio of time awake and time asleep.
B)is an innate biological rhythm.
C)is caused by a sleep-promoting substance in the blood.
D)cycles cannot be altered by external factors.

Question

Quizplus · Accepted Answer

Shortened sleep-waking cycles overlook the fact that sleep is an innate biological rhythm, meaning it is controlled by internal factors and cannot be solely altered by external ones. The idea that sleep must match a specific ratio of time awake and time asleep (option A) is incorrect. While there are sleep-promoting substances in the blood (option C), this is not the main factor controlling the sleep-wake cycle. Option D ("cycles cannot be altered by external factors") is a generalization that is not entirely accurate, as external factors such as light exposure and physical activity can influence sleep-wake cycles.

Shortened Sleep-Waking Cycles Overlook the Fact That Sleep