The atomic number of an element is equal to the number of:
A. protons plus neutrons.
B. neutrons only.
C. neutrons plus electrons.
D. protons plus electrons.
E. protons only.
Answer: E
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Which of the following statements about the DNA in one of your brain cells is true?
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In a chemical analysis of an animal tissue sample, which element would be in the least quantity?
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A sporophyte is a ____ plant body that grows
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