Final answer:
Deoxyadenosine is a nucleoside composed of adenine and deoxyribose. It is linked through an N-glycosidic bond and is foundational to DNA structure.
Step-by-step explanation:
A nucleoside that is composed of the base adenine attached to a deoxyribose is called deoxyadenosine. This compound is made by linking adenine to the -OH group on the first carbon (1') of the pentose sugar deoxyribose through an N-glycosidic bond. The sugar deoxyribose distinguishes this nucleoside from those found in RNA, which use ribose. In the context of DNA, this compound forms a part of the building blocks known as deoxyribonucleotides when combined with one or more phosphate groups, ultimately playing a crucial role in the structure of DNA.