A circadian rhythm:

Question

A circadian rhythm:

Quizplus · Accepted Answer

A circadian rhythm is a biological rhythm that follows a 24-hour cycle, such as the sleep-wake cycle.

Answer: B 
 The length of a circadian rhythm can vary between individuals, but it typically falls within the range of 12-48 hours.

Answer: C 
 Circadian rhythms can influence both alertness and hormonal levels, as they are responsible for regulating various physiological processes throughout the body.

Answer: D 
 An ultradian rhythm is a biological rhythm that occurs more than once within a 24-hour period, whereas a circadian rhythm occurs roughly once every 24 hours. Therefore, a circadian rhythm is longer than an ultradian rhythm, not shorter.

A Circadian Rhythm