To identify the reactants in the light reactions of photosynthesis, we need to understand the process and the compounds involved.

### Understanding the Light Reactions
The light reactions occur in the thylakoid membranes of chloroplasts and require light energy to convert water (H₂O) and sunlight into chemical energy stored in ATP and NADPH. The main products are ATP, NADPH, and oxygen (O₂) is released as a by-product.

### Analyze the Options
1. **H₂O** - Water is a critical reactant in the light reactions.
2. **ATP** - ATP is produced in the light reactions; it is not a reactant.
3. **carbon dioxide** - Carbon dioxide (CO₂) is used in the Calvin cycle, not the light reactions.
4. **NADPH** - NADPH is produced during the light reactions, not a reactant.
5. **oxygen** - Oxygen is a product, not a reactant.

### Conclusion
The only compound from the options given that serves as a reactant in the light reactions is **H₂O** (water).

### Final Answer
**H₂O** (water) represents a reactant in the light reaction of photosynthesis.

Question

To identify the reactants in the light reactions of photosynthesis, we need to understand the process and the compounds involved.

### Understanding the Light Reactions
The light reactions occur in the thylakoid membranes of chloroplasts and require light energy to convert water (H₂O) and sunlight into chemical energy stored in ATP and NADPH. The main products are ATP, NADPH, and oxygen (O₂) is released as a by-product.

### Analyze the Options
1. **H₂O** - Water is a critical reactant in the light reactions.
2. **ATP** - ATP is produced in the light reactions; it is not a reactant.
3. **carbon dioxide** - Carbon dioxide (CO₂) is used in the Calvin cycle, not the light reactions.
4. **NADPH** - NADPH is produced during the light reactions, not a reactant.
5. **oxygen** - Oxygen is a product, not a reactant.

### Conclusion
The only compound from the options given that serves as a reactant in the light reactions is **H₂O** (water).

### Final Answer
**H₂O** (water) represents a reactant in the light reaction of photosynthesis.

Knowee AI · Accepted Answer

To identify the reactants in the light reactions of photosynthesis, we need to understand the process and the compounds involved.

### Understanding the Light Reactions
The light reactions occur in the thylakoid membranes of chloroplasts and require light energy to convert water (H₂O) and sunlight into chemical energy stored in ATP and NADPH. The main products are ATP, NADPH, and oxygen (O₂) is released as a by-product.

### Analyze the Options
1. **H₂O** - Water is a critical reactant in the light reactions.
2. **ATP** - ATP is produced in the light reactions; it is not a reactant.
3. **carbon dioxide** - Carbon dioxide (CO₂) is used in the Calvin cycle, not the light reactions.
4. **NADPH** - NADPH is produced during the light reactions, not a reactant.
5. **oxygen** - Oxygen is a product, not a reactant.

### Conclusion
The only compound from the options given that serves as a reactant in the light reactions is **H₂O** (water).

### Final Answer
**H₂O** (water) represents a reactant in the light reaction of photosynthesis.

Which of the following represents a reactant in the light reaction of photosynthesis?Multiple ChoiceH2OH2OATPcarbon dioxideNADPHoxygen

Question

Which of the following represents a reactant in the light reaction of photosynthesis?

Solution

Understanding the Light Reactions

Analyze the Options

Conclusion

Final Answer

Similar Questions

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