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Why do nucleic acids and mononucleotides have a negative charge physiological ph?

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closed as off-topic by AMR, kmm, MattDMo, AliceD, anongoodnurse Jan 10 '16 at 7:43

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  • "Homework questions are off-topic on Biology unless you have shown your attempt at an answer. For more information see our homework policy." – AMR, kmm, AliceD, anongoodnurse
If this question can be reworded to fit the rules in the help center, please edit the question.

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    $\begingroup$ Are you asking about nucleic acids or nucleotides? $\endgroup$ – Chris Jan 9 '16 at 10:25
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    $\begingroup$ This sounds like a homework question. Have you tried looking at the structure of a nucleotide? $\endgroup$ – Roland Jan 9 '16 at 14:11
  • $\begingroup$ tud.ttu.ee/im/Tonu.Reintamm/shabarova/4.1.html $\endgroup$ – CKM Jan 9 '16 at 16:48
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The phosphate group/s present in the mononucleotide or nucleic acid result in the structure having an overall slightly negative charge.

Positively charged proteins that are also present in the cell such as histones help to keep the negatively charged nucleic acid stable 'in vivo'.

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