Reaction center of Rhodobacterium was crystallized by

Options

A. (a) Arnon
B. (b) Huber et al.
C. (c) Emerson
D. (d) Warburg

Answer

### Step-by-Step Solution

1. **Understanding Rhodobacterium**:
- Rhodobacterium is a type of purple non-sulfur bacteria known for its ability to convert light energy into chemical energy. It plays a significant role in photosynthesis and is capable of utilizing light for its energy needs.

2. **Identifying the Reaction Center**:
- The reaction center in Rhodobacterium is crucial as it is the site where light energy is captured and converted into chemical energy. This process is essential for the survival of these bacteria as it provides them with the necessary energy to synthesize their food.

3. **Evaluating the Options**:
- The question asks who crystallized the reaction center of Rhodobacterium. We need to analyze each option provided:
- **A. Arnon**: This scientist is known for his work on chlorophyll estimation, not for crystallizing the reaction center.
- **B. Huber et al.**: This is the correct answer as Huber and his colleagues were involved in the crystallization of the reaction center of Rhodobacterium.
- **C. Emerson**: He contributed to the understanding of the role of sunlight in photosynthesis but did not crystallize the reaction center.
- **D. Warburg**: Known for the Warburg effect related to cancer cells, he did not work on the crystallization of the reaction center.

4. **Conclusion**:
- After evaluating all the options, the correct answer is **B. Huber et al.**, as they were responsible for crystallizing the reaction center of Rhodobacterium.