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Question
Biology
Posted 10 months ago
Is DNA positively charged negatively charged or neutral why?
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Answer from Sia
Posted 10 months ago
Answer
DNA is negatively charged.
Solution
a
DNA backbone charge: The backbone of DNA is composed of alternating sugar (deoxyribose) and phosphate groups
b
Phosphate groups: Each phosphate group in the DNA backbone has a negative charge due to the presence of negatively charged oxygen atoms
c
Overall charge: The negative charges of the phosphate groups are not fully neutralized by the positively charged ions (such as magnesium and sodium) that are typically found in the cellular environment, resulting in DNA having an overall negative charge
Key Concept
DNA's negative charge
Explanation
DNA is negatively charged due to the phosphate groups in its backbone, which contain negatively charged oxygen atoms.
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