Plastocyanin contains

Options

A. Mo
B. Mg
C. Cu
D. Zn

Answer

**Step-by-Step Solution:**

1. **Identify the Substance**: The question asks about plastocyanin, which is a specific type of protein.

2. **Determine the Composition**: Plastocyanin is known to be a copper-containing protein. This means that copper is an essential component of its structure.

3. **Classify the Protein**: Plastocyanin belongs to a group of proteins known as blue metalloproteins. This classification is important because it highlights its unique properties.

4. **Understand the Function**: The primary role of plastocyanin is in the process of photosynthesis. It plays a crucial part in the electron transport chain, facilitating the transfer of electrons between different photosystems during the light-dependent reactions of photosynthesis.

5. **Conclude the Answer**: Based on the above information, the answer to the question "Plastocyanin contains" is copper.

**Final Answer**: Plastocyanin contains copper.

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