Demographics include population __________ and __________ structure, such as the size of the __________ base. Fill in the blank(s) with the appropriate word(s)
ANSWER: size; age; reproductive
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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.
Name the typical phases of the bacterial growth cycle in liquid culture medium
What will be an ideal response?
A polygenic trait can have
A) fewer genotypes than most single-gene traits. B) many possible genotypes, but few possible phenotypes. C) many possible genotypes, producing many possible phenotypes. D) fewer phenotypes than most single-gene traits
The community of detritivores, such as earthworms, millipedes, slugs, and pseudoscorpions, living in the leaf litter on the shady floor of a deciduous forest obtains its energy and nutrients primarily from
A) decomposition of the leaves of deciduous trees that fall on the surface of the soil. B) chemosynthesis by green and purple sulfur bacteria living on the surface of the leaves. C) photosynthesis or algae living in the soil beneath the leaves. D) carbohydrates formed in the roots of the trees that leach out into the surrounding soil. E) predation on one another.