Multiple Choice
In the context of DNA structure, what type of biomolecule are DNA and RNA?
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7. DNA and Chromosome Structure
DNA Structure
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In terms of overall electrical charge at physiological pH, what net charge does DNA typically carry and what structural feature is primarily responsible?
A
Net positive charge due to the amino groups on the nitrogenous bases
B
Net neutral charge because base pairing cancels the charges in the helix
C
Net positive charge due to hydrogen bonding between complementary bases
D
Net negative charge due to the phosphate groups in the sugar-phosphate backbone
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