Question

level 5 q2 what stage of photosynthesis uses carbon dioxide to make glucose? a. light reactions b. calvin cycle c. atp synthesis d. cellular respiration diagram: carbon dioxide, atp, nadph, ?, glucose, nadp+, adp + p options: a light reactions, b calvin cycle, c atp synthesis, d cellular respiration

Explanation:

• Option A: Light reactions in photosynthesis convert light energy to chemical energy (ATP, NADPH) and split water, but do not use CO₂ to make glucose.
• Option B: The Calvin Cycle (light - independent reactions) takes in carbon dioxide, uses ATP and NADPH (from light reactions), and synthesizes glucose.
• Option C: ATP synthesis is part of the light reactions (or cellular respiration) and is about making ATP, not glucose from CO₂.
• Option D: Cellular respiration is the process of breaking down glucose, not making it from CO₂.

Answer:

B. Calvin Cycle