Adenosine diphospate contains

Options

A. One high energy bond
B. Two high energy bond
C. three high energy bond
D. Four high energy bond

Answer

To solve the question regarding how many high energy bonds are present in adenosine diphosphate (ADP), we can follow these steps:

### Step-by-Step Solution:

1. **Understanding ADP Structure**:
- Adenosine diphosphate (ADP) consists of an adenosine molecule (which is a nucleoside) and two phosphate groups. The structure can be represented as Adenosine + 2 Phosphate groups.

2. **Identifying the Bonds**:
- In ADP, there are two types of bonds to consider:
- The bond between the adenosine and the first phosphate group (this is an ester bond).
- The bond between the first and second phosphate groups (this is a high-energy anhydride bond).

3. **High Energy Bonds in ADP**:
- The only high-energy bond in ADP is the bond between the two phosphate groups. This bond is known as the phosphoanhydride bond and is responsible for the energy release during the conversion of ADP to ATP (adenosine triphosphate).

4. **Conclusion**:
- Since ADP has only one high-energy bond (the bond between the two phosphate groups), the correct answer to the question is that adenosine diphosphate contains **one high energy bond**.

### Final Answer:
- **Adenosine diphosphate contains one high energy bond.**