In DNA structure, which nitrogenous base does adenine (A) pair with according to Watson-Crick base-pairing rules?

In the DNA double helix, what are the “sides” (backbone) of the DNA ladder primarily made of?

Which set correctly lists the nitrogenous bases found in DNA?

In the DNA double helix, what type of chemical bond holds the sugar-phosphate backbone together within a single strand?

In the DNA double helix, complementary base pairs (A with T, and G with C) are primarily held together by which type of interaction?

In the DNA double helix, what type of interaction holds complementary nitrogenous bases together across the two strands?

In the DNA double helix, what type of interaction primarily holds complementary nitrogenous bases together across the two strands?

In the DNA double helix, what primarily holds complementary base pairs (A–T and G–C) together across the two strands?

In DNA structure, what is the overall shape of the DNA molecule called?