BIOMOLECULES AND ENZYMES

Detailed explanation-1: -Under normal circumstances, the nitrogen-containing bases adenine (A) and thymine (T) pair together, and cytosine (C) and guanine (G) pair together. The binding of these base pairs forms the structure of DNA .

Detailed explanation-2: -The nitrogen bases are held together by hydrogen bonds: adenine and thymine form two hydrogen bonds; cytosine and guanine form three hydrogen bonds.

Detailed explanation-3: -Base Pair Attached to each sugar is one of four bases: adenine (A), cytosine (C), guanine (G) [GWA-NeeN] or thymine (T). The two strands are held together by hydrogen bonds between pairs of bases: adenine pairs with thymine, and cytosine pairs with guanine.

Detailed explanation-4: -Use in clinical context. Within a molecule of DNA, pairs of bases are chemically bonded together by hydrogen bonds. These bonds hold the two strands of the molecule together. Bases pair up with each other in a consistent way, and this process is called complementary base pairing, or Watson-Crick base pairing.

Detailed explanation-5: -In base pairing, adenine always pairs with thymine, and guanine always pairs with cytosine. Source: definition from the National Human Genome Research Institute (NHGRI) Glossary of Genetic Terms. In addition to the letters A, C, T, and G, a number of other abbreviations can be used to represent the nucleotide bases.