How many ions of `Na^(+)` and `K^(+)` are pumped out and in sodium-potassium exchange pump for each molecule of ATP used ?

Explanation

To answer the question regarding the sodium-potassium exchange pump and the number of ions pumped in and out for each molecule of ATP used, we can break it down into the following steps:

### Step-by-Step Solution:

1. **Understanding the Sodium-Potassium Pump**: The sodium-potassium pump is a type of active transport mechanism that moves sodium (Na⁺) and potassium (K⁺) ions across the cell membrane against their concentration gradients.

2. **Identifying the Ion Movement**: For each cycle of the sodium-potassium pump:
- **Sodium Ions (Na⁺)**: 3 sodium ions are transported out of the cell.
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