Name the energy currency in the living organisms .When and where is it produced ?

Explanation

**Step-by-Step Solution:**

1. **Identify the Energy Currency:**
- The energy currency in living organisms is **ATP**, which stands for **adenosine triphosphate**.

2. **Reason for Being Called Energy Currency:**
- ATP is referred to as the energy currency of the cell because it is the primary molecule that stores and transfers energy within cells. Energy is produced and utilized in the form of ATP.

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