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Return to Behavioral Neurobiology 3e student resources
Chapter 10 Self-test questions
Circadian rhythms and biological clocks
Quiz Content
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not completed
.
Which of the following scholars pioneered research in chronobiology? Please select all that apply.
Jürgen Aschoff
correct
incorrect
Seymour Benzer
correct
incorrect
Erich von Holst
correct
incorrect
Colin Stephenson Pittendrigh
correct
incorrect
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not completed
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An actogram is a plot of the recorded activity of an individual during a given time period.
True
correct
incorrect
False
correct
incorrect
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not completed
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How can the free-running period of a mouse be determined?
Keeping the mouse under natural day/night conditions, and continuously monitoring its locomotor activity.
correct
incorrect
Keeping the mouse under LD 12:12, and continuously monitoring its locomotor activity.
correct
incorrect
Keeping the mouse under LD 8:16, and continuously monitoring its locomotor activity.
correct
incorrect
Keeping the mouse under DD, and continuously monitoring its locomotor activity.
correct
incorrect
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not completed
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The following observations relate to biological clocks. Which of them is most atypical?
Under natural day/night conditions, the behavior of animals mirrors the rhythmic oscillations of the free-running period of the biological clock.
correct
incorrect
The free-running period of biological clocks is, in most cases, different from the 24h day.
correct
incorrect
The circadian rhythm of biological clocks can be synchronized to the 24h cycle of the environment by the process of entrainment.
correct
incorrect
Free-running rhythms of biological clocks are temperature compensated.
correct
incorrect
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not completed
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Which of the following statements about the period (
per
) gene and the protein PER encoded by this gene in
Drosophila
is
not
correct?
The levels of
per
transcripts exhibit daily oscillations.
correct
incorrect
The PER protein regulates indirectly the expression of its own gene.
correct
incorrect
Expression of the
per
gene is restricted to the head region of the animal.
correct
incorrect
Mutations of the
per
gene lead to alterations in the timing of eclosion.
correct
incorrect
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The suprachiasmatic nucleus is the only site in the body of mammals in which clock genes are expressed.
True
correct
incorrect
False
correct
incorrect
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