Photosynthesis is

Options

A. an oxidative , an exergonic , and a catabolic process.
B. a redox reaction , an endergonic , and an anabolic process.
C. a reductive , an exergonic , and an anabolic process
D. a reductive , an endergonic , and an catabolic process .

Answer

### Step-by-Step Solution:

1. **Understanding Photosynthesis**:
- Photosynthesis is the process by which green plants, algae, and some bacteria convert light energy into chemical energy in the form of glucose. This process primarily occurs in the chloroplasts of plant cells.

2. **Key Components of Photosynthesis**:
- The main reactants in photosynthesis are carbon dioxide (CO₂) and water (H₂O). The process requires sunlight and chlorophyll, the green pigment in plants.

3. **Nature of the Process**:
- Photosynthesis is an **endergonic** process, which means it requires energy input (from sunlight) to proceed. It absorbs energy rather than releasing it.

4. **Redox Reaction**:
- Photosynthesis involves a **redox reaction** where carbon dioxide is reduced to form glucose, and water is oxidized to release oxygen. This means that during the process, electrons are transferred between molecules.

5. **Anabolic Process**:
- Photosynthesis is considered an **anabolic** process because it builds complex molecules (glucose) from simpler ones (carbon dioxide and water). Anabolic processes require energy input.

6. **Conclusion**:
- Based on the characteristics of photosynthesis, the correct description of the process is that it is a **redox reaction**, **endergonic**, and **anabolic**. Therefore, the correct answer to the question is the second option.

### Final Answer:
**Photosynthesis is a redox reaction, endergonic, and anabolic process.**

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