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general knowledge Online Quiz - 3310
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Everybody has a "biological clock."
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A
True
💡 Explanation:
The 'biological clock' refers to circadian rhythms, internal processes that regulate the sleep-wake cycle and repeat approximately every 24 hours. All humans have this internal timekeeping system, though individual chronotypes (morning people vs. night owls) vary. The circadian rhythm is controlled by the suprachiasmatic nucleus in the hypothalamus.