Which purine base forms 3 hydrogen bonds when binding its complementary nucleotide base?

Why is DNA commonly referred to as a double-helix model?

Which type of bond is found between complementary nitrogenous bases in the DNA double helix?

Which of the following is NOT a component of a DNA nucleotide?

Which of the following would be true of any given DNA molecule?

Which pair of nitrogen bases are correctly matched in the structure of DNA?

What is the significance of the sequence (order) of the nitrogenous bases in DNA?

How is genetic information stored in a molecule of DNA?