Day is to night - Answers Diurnal is to nocturnal as:
D - Answers Jill often works a part-time job until 10 PM and then studies until 3 AM. She wakes up at
7:30 AM and skips breakfast so she can make it to her morning classes on time. If Jill continues her
abnormal sleeping and eating patterns, it may put her at increased risk for: A) diabetes.
B) cardiovascular disease.
C) obesity.
D) All of the answers are correct.
circadian rhythm - Answers The day-night cycle that influences sleeping and waking is called:
D - Answers Our biological rhythms are influenced by:
A) the earth orbiting around the sun.
B) the rotational axis of the planet.
C) light.
D) All of the answers are correct.
plant - Answers Daily fluctuations in the rhythmical movement of plant leaves come from within the:
Period - Answers The time required for a complete cycle of activity is called a:
circannual rhythms - Answers Migratory cycles of birds are examples of:
circadian rhythm - Answers Daily body-temperature changes would be an example of:
infradian rhythm - Answers The human menstrual cycle would be an example of:
ultradian rhythm - Answers Eating behavior would be an example of:
less than one day; more than one day but less than one year - Answers Ultradian rhythms have a period
of ______, while infradian rhythms have a period of ______
More than 24 years - Answers When all external cues are removed, animals run on a free-running
rhythm. The free-running rhythm of a human is:
Free- running - Answers A ________-_________ rhythm is determined from within the body
Biological Clock - Answers A _______ _______ that is entrained has been reset by a Zeitgeber
More than 24 hours; less than 24 hours - Answers If sparrows are tested in constant light, their free-
running periods are _____, whereas if they are tested in constant darkness, their free-running periods
are _____.
Zeitgeber - Answers The clock on most computers is continually updated and reset via an Internet
connection to a time server. In this example the time server acts as a:
, D - Answers Which of the following is likely the most potent Zeitgeber?
A) eating times
B) darkness
C) light
D) temperature
Zeitgebers - Answers Cues that maintain rhythmicity are known as:
C - Answers Seasonal affective disorder (SAD) is most common:
A) far north of the equator.
B) far south of the equator.
C) both far north and far south of the equator.
D) at the equator.
C - Answers Shift workers (e.g., working 7 P.M. to 3 A.M.) are more likely to develop:
A) insomnia.
B) hypersomnia.
C) metabolic syndrome.
D) anxiety problems.
A - Answers Jet lag would be the worst if you were flying:
A) from Boston to London
B) from Paris to Rome
C) from London to New York
D) from Paris to London
Hypothalamus - Answers According to a study by Curt Richter, running, eating, and drinking no longer
occurred at appropriate times following lesions to the:
Hypothalamus - Answers The suprachiasmatic nucleus is located in the:
D - Answers If inputs and outputs from the suprachiasmatic nucleus (SCN) are severed, the neurons in
the SCN: A) increase their rates of firing.
B) decrease their rates of firing. C) cease firing altogether.
D) continue to fire at the same rate as before.
C - Answers Which of the following would describe the electrical activity of neurons in a rat's
suprachiasmatic nucleus if it were removed and placed in a dish?