Assertion : ATP acts as the energy currency of the cell.
Reason : ATP can be broken down to release energy wherever and whenever energy needs to be utilised.

Options

A. If both assertion and reason are true and reason is the correct explanation of assertion
B. If both assertion and reason are true but reason is not the correct explanation of assertion
C. If assertion is true but reason is false
D. If both assertion and reason are false

Explanation

### Step-by-Step Solution:

1. **Understanding the Assertion**: The assertion states that "ATP acts as the energy currency of the cell." This means that ATP (adenosine triphosphate) is the primary molecule used by cells to store and transfer energy.

2. **Understanding the Reason**: The reason provided is that "ATP can be broken down to release energy wherever and whenever energy needs to be utilized." This indicates that ATP can be hydrolyzed (broken down) to release energy, making it readily available for cellular processes.

3. **Composition of ATP**: ATP is composed of an adenine base, a ribose sugar, and three phosphate groups. The bonds between these phosphate groups are high-energy bonds, specifically called phosphoanhydride bonds.

4. **Energy Release Mechanism**: When ATP is hydrolyzed (a phosphate group is removed), it releases energy. This process converts ATP into ADP (adenosine diphosphate) and a free inorganic phosphate. The energy released can then be used to power various cellular activities.

5. **Conclusion**: Both the assertion and the reason are correct. ATP indeed acts as the energy currency of the cell, and it can be broken down to release energy whenever needed. The reason provided correctly explains why ATP is considered the energy currency.

### Final Answer:
- **Assertion**: True
- **Reason**: True
- **Explanation**: The reason is a correct explanation of the assertion.