The term _____ refers to the rhythm (level of energy) of the human body that varies with the time of day.
A) circadian cycle
B) arrhythmic cycle
C) lunar rhythm
D) infradian rhythm

Question

Quizplus · Accepted Answer

The term circadian cycle refers to the rhythm of the human body that varies with the time of day, influencing processes such as sleep-wake cycles, hormone release, and metabolism. Option B is incorrect because arrhythmic means lacking rhythm or irregular rhythm. Option C is incorrect because lunar rhythm refers to biological cycles that are influenced by the phases of the moon, which is not related to the question. Option D is incorrect because infradian rhythm refers to biological cycles that occur less frequently than once a day, such as menstrual cycles or seasonal reproductive cycles.

The Term _____ Refers to the Rhythm (Level of Energy)