The measure of an atom's ability to pull electrons away from another atom is called _____
a. electronegativity
b. polarity
c. charge
d. concentration
e. atomic number
Answer: a. electronegativity
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The blue and red dots in this figure represent genetically different _____
1.Spores
2.Gametes
3.Nuclei
4.Hyphae
In 2006, the greatest use of energy in the United States was _____
1.nuclear energy going to industry 2.natural gas for residential and commercial uses 3.petroleum used for transportation 4.petroleum used in industry
Jane is a 20-year-old individual who externally resembles a female but who is actually genetically a male (XY). Based on your knowledge of human development, how could this be possible?
A) Although Jane is genetically a male, she has produced an abnormal amount of estrogen since birth. B) During development, Jane's body produced an excessive amount of testosterone, leading to the development of female external genitalia. C) Jane's embryonic gonads did not produce androgens, or they lacked functional testosterone receptors. D) Due to a genetic defect, Jane lacks sufficient aromatase activity, the enzyme that converts testosterone into estrogen.
Lymph returns to the circulatory system
A. because it is pumped by the heart. B. by entering large veins near the heart. C. by seeping into capillaries. D. when it enters arteries.