Which of the following molecules is a reactant of photosynthesis? A) CO₂ B) glucose C) O₂ D) chlorophyll

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CO2 is a reactant of photosynthesis, as it is taken in by plants and converted into glucose and oxygen through the process of photosynthesis. Glucose (B) is a product of photosynthesis, not a reactant. O2 (C) is also a product of photosynthesis, as it is released into the atmosphere as a byproduct of oxygenic photosynthesis. Chlorophyll (D) is a pigment molecule that absorbs light energy for use in photosynthesis, but it is not itself a reactant in the process.

Which of the Following Molecules Is a Reactant of Photosynthesis