Match the following: Base Nucleoside i. Adenine a. Guanosine ii. Guan…

The correct answer is option 2. i-d, ii-a, iii-b, iv-e, v-c.

Base	Nucleoside
i. Adenine	d. Adenosine
ii. Guanine	a. Guanosine
iii. Cytosine	b. Cytidine
iv. Thymine	e. Thymidine
v. Uracil	c. Uridine

Let us break down the matching of each base with its corresponding nucleoside:

Nucleosides and Their Components: A nucleoside consists of a nitrogenous base (purine or pyrimidine) attached to a sugar (ribose in RNA or deoxyribose in DNA).

Bases and Their Corresponding Nucleosides:

i. Adenine (A)

Nucleoside: Adenosine

Adenosine is formed when adenine (a purine base) is attached to a ribose sugar. In RNA, the nucleoside formed from adenine and ribose is called adenosine.

ii. Guanine (G)

Nucleoside: Guanosine

Guanosine is formed when guanine (a purine base) is attached to a ribose sugar. This is the nucleoside corresponding to guanine in RNA.

iii. Cytosine (C)

Nucleoside: Cytidine

Cytidine is formed when cytosine (a pyrimidine base) is attached to a ribose sugar. This nucleoside is found in RNA.

iv. Thymine (T)

Nucleoside: Thymidine

Thymidine is formed when thymine (a pyrimidine base) is attached to a deoxyribose sugar. Thymidine is found in DNA, not RNA.

v. Uracil (U)

Nucleoside: Uridine

Uridine is formed when uracil (a pyrimidine base) is attached to a ribose sugar. This is the nucleoside corresponding to uracil in RNA.

Thus, the correct option is: 2. i-d, ii-a, iii-b, iv-e, v-c