How many ATPs are released in glycolysis and how many during Krebs cycle ?

Explanation

**Step-by-Step Solution:**

1. **Understand Glycolysis**: Glycolysis is the process where one glucose molecule is broken down into two molecules of pyruvate. This process occurs in the cytoplasm of cells.

2. **Energy Investment Phase**: In the first half of glycolysis, known as the energy investment phase, 2 ATP molecules are used to initiate the breakdown of glucose.

3. **Energy-Releasing Phase**: In the second half of glycolysis, known as the energy-releasing phase, 4 ATP molecules are generated.

...