KROK 1 2021 – Question 137 · KROK (Medicine) · Biological Chemistry
Watson and Crick determined that the DNA double helix structure is stabilized with the bonds between complementary nitrogenous bases. What type of bond is it?
- A. Phosphodiester
- B. N-glycosidic
- C. Ester
- D. Hydrogen
- E. Peptide
Hint
Think about the weak, numerous, non-covalent interactions that link purine to pyrimidine across the two antiparallel strands, rather than the bonds along the sugar-phosphate backbone.
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