Adenine,pentose sugar and phosphate interact to form

Options

A. Adenosine
B. Adenylic acid
C. Adenosine diphosphate
D. Adenine triphosphate.

Answer

To solve the question "Adenine, pentose sugar, and phosphate interact to form," we can follow these steps:

### Step 1: Identify the Components
- **Adenine**: This is a nitrogenous base that is classified as a purine.
- **Pentose Sugar**: This refers to a five-carbon sugar. In the context of nucleic acids, this could be either ribose (in RNA) or deoxyribose (in DNA).
- **Phosphate Group**: This is a phosphate molecule that is involved in forming the backbone of nucleic acids.

### Step 2: Understand the Formation of Nucleotides
- When adenine (the nitrogenous base), a pentose sugar (like ribose or deoxyribose), and a phosphate group come together, they form a nucleotide.
- A nucleotide is the basic building block of nucleic acids (DNA and RNA).

### Step 3: Determine the Specific Nucleotide
- The specific nucleotide formed when adenine interacts with a pentose sugar and a phosphate group is called **adenylic acid** (or adenosine monophosphate, AMP).
- This is because the pentose sugar (ribose or deoxyribose) is attached to the adenine and a single phosphate group.

### Step 4: Consider Other Options
- **Adenosine**: This is adenine attached to a sugar, but without the phosphate group.
- **Adenosine diphosphate (ADP)**: This contains two phosphate groups.
- **Adenosine triphosphate (ATP)**: This contains three phosphate groups and is known as the energy currency of the cell.

### Conclusion
Given the interaction of adenine, pentose sugar, and a phosphate group, the correct answer is **adenylic acid**.

---