The correct description of the relationship between photosynthesis and cellular respiration is

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Products of photosynthesis are the reactants of cellular respiration.
Reactants of cellular respiration are the reactants of photosynthesis.
Products of cellular respiration and photosynthesis is glucose and water.

Answer 1

None of the above descriptions accurately describes the relationship between photosynthesis and cellular respiration. The correct description is:

Photosynthesis and cellular respiration are complementary processes that occur in living organisms. During photosynthesis, plants and some other organisms convert sunlight, carbon dioxide, and water into glucose and oxygen. The glucose produced is then used as a source of energy during cellular respiration. In cellular respiration, glucose and oxygen are metabolized to produce carbon dioxide, water, and ATP (adenosine triphosphate), which is the cell's main energy currency. Therefore, the products of photosynthesis (glucose and oxygen) are the reactants of cellular respiration, and the products of cellular respiration (carbon dioxide, water, and ATP) are the reactants of photosynthesis.