An experimental subject is isolated in an underground room with no windows, no clocks, and no contact with the outside world. Researchers monitoring his behavior observe that he eats breakfast a little bit later each day
What term best describes the subject's biological activity?
A. circadian rhythm
B. free-running rhythm
C. jet lag
D. phase shift
E. entrainment
B
Anatomy & Physiology
You might also like to view...
This figure shows the femur. The feature indicated by number 1 is the
A. pectineal line. B. posterior superior iliac spine. C. intertrochanteric crest. D. intertrochanteric line. E. arcuate line.
Anatomy & Physiology
Building up large molecules is called _______
Fill in the blank(s) with correct word
Anatomy & Physiology
A hormone whose production is associated with seasonal fluctuations in day length is ________.
Fill in the blank(s) with the appropriate word(s).
Anatomy & Physiology
The crown of a tooth is covered by
A) enamel. B) cement. C) dentin. D) pulp. E) periodontium.
Anatomy & Physiology