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Question
The net electric charge on DNA and histones is ______.
Options
negative and positive, respectively
both negative
both positive
zero
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Solution
The net electric charge on DNA and histones is negative and positive, respectively.
Explanation:
On DNA and histones, the net electric charge is both negative and positive. The presence of phosphate ions in the nucleotides makes the DNA molecule negatively charged. Because lysine and arginine amino acid residues are present, his tones are positively charged.
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