Figure 2-1 represents:
a. two isotopes of the same element.
b. two different elements.
c. two different ions.
d. an acid and a base.
e. a cation and an anion.
A
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Neurons share three features with almost every other type of cell, there are
a. outer membrane, axons and nucleus. b. nucleus, mitochondria and dendrites. c. cell body, nucleus and axons. d. outer membrane, cell body and mitochondria.
Which of the following are muscle cells that are active in vasoconstriction and vasodilation of blood vessels?
A. Skeletal muscle cells B. Cardiac muscle cells C. Endocardium D. Smooth muscle
The concentration of the United States auto industry in and around Detroit, MI is an example of a(n)
A) localization economy. B) external economy. C) ancillary activity. D) regional economy.
For the genetic cross Aa × Aa, 3:1 is the:
a. phenotypic ratio for the offspring if inheritance was by complete dominance. b. phenotypic ratio for the offspring if inheritance was by incomplete dominance. c. genotypic ratio for the offspring if inheritance was by incomplete dominance. d. genotypic ratio for the offspring if inheritance was by complete dominance. e. None of the above are correct.