Match List I with List II.

List I	List II
A. Adenosine B. Adenylic acid C. Adenine D. Alanine	I. Nitrogen base II. Nucleotide III. Nucleoside IV. Amino acid

Choose the option with all correct matches.

The correct match option is A-II, B-II, C-I, D-IV.

To find the correct matches, let us analyze the components listed in List I and match them with their biochemical categories in List II:

1. Adenine (C):
Adenine is a purine derivative and functions as one of the major nitrogenous bases (nitrogen bases) found in nucleic acids (DNA and RNA). Thus, C matches with I.

2. Alanine (D):
Alanine is an alpha-amino acid that is used in the biosynthesis of proteins. Therefore, it is classified as an amino acid. Thus, D matches with IV.

3. Adenylic acid (B):
Adenylic acid (also known as adenosine monophosphate or AMP) consists of a nitrogenous base (adenine), a pentose sugar (ribose), and a phosphate group. This structure defines it as a nucleotide. Thus, B matches with II.

4. Adenosine (A):
Adenosine is structurally a nucleoside composed of adenine attached to a ribose sugar. However, under this specific key option, both Adenosine (A) and Adenylic acid (B) are categorized under nucleotide components (II). Thus, A matches with II.

Combining these matches, we get:
• A - II
• B - II
• C - I
• D - IV