Moderate

A phosphodiester bond is:

Correct answer: C. C-O-P-O-C

  • A. P-O-C-P-O-C
  • B. C-O-P
  • C. C-O-P-O-C
  • D. C-C-O-P

Explanation

The correct structure of a phosphodiester bond is C-O-P-O-C, which forms between the phosphate group of one nucleotide and the hydroxyl group of another nucleotide. This bond is crucial in linking nucleotides together to form the backbone of DNA and RNA. Option A is incorrect because it suggests an unrealistic structure with two phosphorus atoms. Option B is incomplete and does not fully represent the bond. Option D incorrectly includes an extra carbon atom that is not part of the standard phosphodiester linkage.

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