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DNA Structure · Botany

Phosphodiester bonds link which two parts of adjacent nucleotides?

  1. The 5' phosphate of one and the 3' hydroxyl of the next one
  2. The nitrogenous bases on both adjacent nucleotide units
  3. The 1' carbon atoms found on both of the adjacent sugars
  4. Two separate phosphate groups joined directly to each other
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Correct answer: The 5' phosphate of one and the 3' hydroxyl of the next one

The bond forms between the phosphate group attached to the 5' carbon of one nucleotide and the -OH group on the 3' carbon of the next. This creates the continuous sugar-phosphate chain.

Difficulty: Medium Question 16 of 20

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