Ticking away, I am neither alive nor dead, yet I govern the cycles of the living instead. What process am I that keeps time in the cell's head?
Category: Science · Difficulty: hard
Hint: I help regulate sleep and biological processes.
Answer
Circadian rhythm
Explanation
Circadian rhythms are natural processes that follow a roughly 24-hour cycle, affecting sleep and other biological functions.
This is a hard science riddle — a tricky one that takes a little thought. The answer is Circadian rhythm.
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