Final answer:
Deoxyadenosine includes the base adenine and the sugar deoxyribose, uridine includes uracil and ribose, and deoxyguanosine contains guanine and deoxyribose.
Step-by-step explanation:
The nucleosides in concern are composed of a specific base and a sugar. In the case of deoxyadenosine, the base is adenine and the sugar is deoxyribose, because it is a component of DNA where the sugar lacks an oxygen atom on the 2' carbon. For uridine, the base is uracil, which is specific to RNA, and the sugar is ribose. Lastly, deoxyguanosine features the base guanine and, like deoxyadenosine, contains the sugar deoxyribose as part of its structure in DNA.
In nucleosides, deoxyribose indicates the sugar present in DNA, whereas ribose denotes the sugar found in RNA.
In the nucleoside uridine, the base is uracil and the sugar is ribose. In the nucleoside deoxyguanosine, the base is guanine and the sugar is deoxyribose.