A motor neuron and all the muscle fibers under
its control is a ____ unit.
a. neuromuscular
b. movement
c. muscle
d. motor
e. coordination
D
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Which statement is TRUE regarding the ecological role of plant degradation by fungi?
A) In brown rot the cellulose is attacked preferentially, and the lignin is left unmetabolized. B) In brown rot the lignin is attacked preferentially, and the cellulose is left unmetabolized. C) In white rot the cellulose is attacked preferentially, and the lignin is left unmetabolized. D) In white rot the lignin is attacked preferentially, and the cellulose is left unmetabolized.
In the classic fable of "the boy who cried wolf," the villagers who stopped listening to the shepherd boy who kept lying and telling them that a wolf was attacking the sheep were exhibiting the form of learning called ____
Fill in the blank with the appropriate word.
This hormone is secreted from the posterior pituitary and regulates muscle contraction.
A. antidiuretic hormone B. prolactin C. adrenocorticotropic hormone D. oxytocin E. epinephrine
Parental support of offspring is an example of
a. artificial selection. b. kin selection. c. natural selection. d. negative selection. e. stabilizing selection.