Chloroplasts make _______________ during photosynthesis by capturing light.

• A. carbon dioxide
• B. oxygen gas
• C. glucose
• D. ATP only

Answer: (C)

Verified step by step guidance

1. Understand the role of chloroplasts: Chloroplasts are organelles found in plant cells and some protists. They are responsible for photosynthesis, the process by which light energy is converted into chemical energy.
2. Recall the main products of photosynthesis: Photosynthesis produces glucose (C₆H₁₂O₆) and oxygen gas (O₂) as its primary outputs. ATP is generated during the light-dependent reactions but is used within the chloroplast for the synthesis of glucose.
3. Break down the process: Photosynthesis occurs in two stages: the light-dependent reactions and the Calvin cycle (light-independent reactions). The light-dependent reactions capture light energy to produce ATP and NADPH, while the Calvin cycle uses these molecules to synthesize glucose from carbon dioxide (CO₂).
4. Focus on the question: The question asks what chloroplasts make during photosynthesis by capturing light. Since capturing light refers to the light-dependent reactions, ATP is produced during this stage, but the ultimate product of photosynthesis is glucose.
5. Conclude the reasoning: Based on the process of photosynthesis, the correct answer is glucose, as it is the main product synthesized during the Calvin cycle using the energy captured in the light-dependent reactions.