Question

83. When researchers removed all time cues, such as light, clock, radio, and television, from subjects' environment, the length of the day expanded from 24 to about 25 hours. This phenomenon is known as:

(A) The interval timing clock
(B) The circadian rhythm
(C) The biological clock
(D) The internal rhythm
(E) The external clock

Answer 1

The phenomenon where the length of the day expanded from 24 to about 25 hours when time cues were removed is known as the circadian rhythm, controlled by the biological clock.

Step-by-step explanation:

When researchers removed all time cues from subjects' environments, the phenomenon where the length of the day expanded from 24 to about 25 hours is known as (B) The circadian rhythm.

A circadian rhythm is a biological rhythm that takes place over a period of about 24 hours.

Examples of circadian rhythm in humans include the sleep-wake cycle, blood pressure, and body temperature changes.

These rhythms are controlled by the biological clock, a tiny structure found at the base of the brain, which is influenced by the amount of light entering the eyes to signal regular changes in behavior and body processes that repeat every 24 hours.