Cytochrome C oxidase complex contains cyto-a & `a_(3)` and two copper centres.

Answer

**Step-by-Step Solution:**

1. **Understanding Cytochrome C Oxidase Complex:**
- The cytochrome C oxidase complex is the fourth complex in the electron transport chain (ETC), which is a crucial part of aerobic respiration. It plays a significant role in the final steps of oxidative phosphorylation.

2. **Components of the Complex:**
- This complex consists of two types of cytochromes: cytochrome a and cytochrome a3. These cytochromes are essential for the transfer of electrons.

3. **Copper Centers:**
- In addition to the cytochromes, the cytochrome C oxidase complex contains two copper centers. These copper centers are integral for the electron transfer process within the complex.

4. **Function of the Complex:**
- The primary function of the cytochrome C oxidase complex is to facilitate the transfer of electrons from cytochrome c (the previous complex) to molecular oxygen (O2). This process results in the reduction of oxygen to water (H2O) and the release of carbon dioxide (CO2) as a byproduct.

5. **Conclusion:**
- Therefore, the statement that the cytochrome C oxidase complex contains cytochrome a, cytochrome a3, and two copper centers is accurate. This complex is vital for the efficient production of ATP through aerobic respiration.

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