Photosynthesis is an example of

Options

A. Anabolism
B. Breakdown reactions
C. Catabolism
D. Exergonic reactions

Answer

**Step-by-Step Text 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. It primarily occurs in the chloroplasts of plant cells.

2. **Reactants and Products**: The basic equation for photosynthesis can be summarized as:
\[ 6 \text{CO}_2 + 6 \text{H}_2\text{O} \xrightarrow{\text{light energy}} \text{C}_6\text{H}_{12}\text{O}_6 + 6 \text{O}_2 \]
Here, carbon dioxide (CO₂) and water (H₂O) are the reactants, and glucose (C₆H₁₂O₆) and oxygen (O₂) are the products.

3. **Energy Requirement**: Photosynthesis involves two main stages: the light-dependent reactions and the light-independent reactions (Calvin cycle). The light-dependent reactions capture energy from sunlight and convert it into chemical energy (ATP and NADPH). This energy is then used in the light-independent reactions to synthesize glucose.

4. **Type of Reaction**: Since photosynthesis involves the synthesis of glucose from simpler molecules (carbon dioxide and water), it is classified as an anabolic reaction. Anabolic reactions are those that build larger molecules from smaller ones, requiring energy input.

5. **Conclusion**: Therefore, the correct classification of photosynthesis is that it is an example of an anabolic reaction.

**Final Answer**: Photosynthesis is an example of an anabolic reaction.

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