How many protons pass through complex V for synthesis of 2 molecules of ATP ?

Explanation

To determine how many protons pass through complex V (ATP synthase) for the synthesis of 2 molecules of ATP, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Role of Complex V**:
- Complex V, also known as ATP synthase, is the enzyme responsible for synthesizing ATP from ADP and inorganic phosphate (Pi) using the energy derived from the proton gradient established by the electron transport chain.

2. **Proton Requirement for ATP Synthesis**:
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