In double-stranded DNA, guanine always forms hydrogen bonds with which base?

The pairing of nitrogenous bases in DNA is specific because which feature ensures that adenine pairs with thymine and guanine pairs with cytosine?

In double-stranded DNA, guanine (G) always base-pairs with which nitrogenous base?

In the B-form DNA double helix, approximately how many times longer is one helical turn than the diameter (width) of the helix?

In DNA structure, which nitrogenous base forms complementary base pairs with thymine (T) via hydrogen bonds?

In the DNA double helix, which two types of molecules form the sugar-phosphate backbone of each strand?

In the DNA double helix, what chemical components make up the “sides” (backbone) of the molecule?

In the DNA double helix often described as a twisted ladder, what molecules form the “stairs” (rungs) of the ladder?

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