In the postpartum female,
a. oxytocin stimulates the production and secretion of milk.
b. oxytocin stimulates the production of milk and prolactin stimulates the secretion of milk.
c. prolactin stimulates the production and secretion of milk.
d. prolactin stimulates the production of milk and oxytocin stimulates the secretion of milk.
e. estrogen and progesterone are directly responsible for the production and secretion of
milk.
D
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The Pax6 gene
A. is a master control gene for limb development. B. codes for a protein that controls the expression genes related to eye development. C. has no known homologs. D. is a homolog to the eyeless gene in rodents.
Gravitropism is a plant's
A) ability to form an abscission layer, so that the fruits and leaves fall from the plant. B) ability to grow only upward. C) apical dominance. D) response to stress-inducing situations. E) directional response to gravity.
The metabolic breakdown of specialized brown fat depots in certain animals is substantially increased during _____
A) acclimatization B) torpor C) evaporative cooling D) nonshivering thermogenesis E) shivering thermogenesis
What is the name of the dartlike protein threads that ciliates can eject from surface organelles when under attack?
a. gullets b. alveoli c. trichocysts d. vacuoles