DNA is very soluble in water. Which of the following parts of DNA is probably the most important for this property?

1. The oxygen atoms that are on the phosphate backbone.
2. The deoxyriboses that are part of the backbone.
3. The hydrogen bonds between the bases.
4. The nitrogen atoms in the bases that are not hydrogen bonded to the complementary strand.

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  1. What would happen if the dna in a cell that is about to divide were not replicated?
  2. why is DNA replication important in eurkaryotic cells?

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