On average, what percentage of the energy in one trophic level becomes incorporated into the next higher trophic level?
A) 10%
B) 30%
C) 50%
D) 90%
A
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Dopamine derived from the hypothalamus is the prominent hormone controlling pituitary prolactin secretion. Dopamine inhibits prolactin secretion. What do you predict would happen if the pituitary were removed from the base of the brain and transplanted to some distant place in the body (for instance on top of the kidney), such that dopamine could no longer regulate prolactin secretion? You can
assume that the transplanted pituitary will be exposed to a ready supply of blood vessels. A. Dopamine secretion would increase. B. Dopamine secretion would decrease. C. Prolactin secretion would decrease. D. Prolactin secretion would increase. E. Both dopamine and prolactin secretion would decrease.
The two major divisions of the vertebrate nervous system are the ____
a. autonomic and peripheral systems b. sympathetic and parasympathetic systems c. cranial and spinal nerves d. central and peripheral nervous systems e. brain and spinal cord
The second line of defense includes inflammation, phagocytosis, fever, and antimicrobial proteins.
Answer the following statement true (T) or false (F)
Which of the following are symptoms (not signs) of inflammation?
a. pain b. abscesses c. soreness d. granulomas e. lymphadenitis