Questions: Hide Question 8 of 10 A deoxyribose linked to a thymine is referred to as a: purine nucleotide. nucleotide. purine nucleoside. nucleotide or purine nucleotide. nucleoside.

The answer is the last one: nucleoside.

Explanation for each option:

1. Purine nucleotide: This is incorrect because thymine is a pyrimidine, not a purine. A purine nucleotide would involve a purine base like adenine or guanine linked to a deoxyribose and a phosphate group.

2. Nucleotide: This is incorrect because a nucleotide consists of a nitrogenous base, a sugar (deoxyribose in DNA), and one or more phosphate groups. The question specifies only a deoxyribose linked to thymine, without mentioning any phosphate group.

3. Purine nucleoside: This is incorrect because thymine is a pyrimidine, not a purine. A purine nucleoside would involve a purine base like adenine or guanine linked to a deoxyribose.

4. Nucleotide or purine nucleotide: This is incorrect for the reasons mentioned above. A nucleotide would require a phosphate group, and thymine is not a purine.

5. Nucleoside: This is correct because a nucleoside consists of a nitrogenous base (in this case, thymine) linked to a sugar (deoxyribose), without any phosphate group.

Summary: A deoxyribose linked to a thymine is referred to as a nucleoside.