The synchronisation in menstrual cycles observed in women who spend much time together is thought to be due to the influence of:
A) Serotonin
B) Melatonin
C) Hormones
D) Pheromones
E) Zeitgebers
Correct Answer:
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Q5: The main pacemaker for endogenous rhythms appears
Q6: An event that is external, but which
Q7: It is accepted that there is a
Q8: Blake (1967) found that there was a
Q9: Hormones are produced by:
A) Endocrine glands
B) The
Q11: Pheromones are biochemical substances that are released
Q12: It now seems clear that Lam et
Q13: Biological rhythms that last for around one
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