Question

question 4
which equation correctly summarizes the process of photosynthesis?
carbon dioxide + water + light energy → glucose + oxygen
glucose + oxygen + light energy → carbon dioxide + water
carbon dioxide + oxygen + light energy → water + glucose
carbon dioxide + glucose + light energy → water + oxygen

Explanation:

Photosynthesis is the process by which plants use light energy, carbon dioxide ($\ce{CO_2}$), and water ($\ce{H_2O}$) to produce glucose ($\ce{C_6H_{12}O_6}$) and oxygen ($\ce{O_2}$). The correct reactants are carbon dioxide, water, and light energy, and the products are glucose and oxygen. So the equation "carbon dioxide + water + light energy → glucose + oxygen" matches this process. The other options have incorrect reactants or products (e.g., using glucose or oxygen as reactants which are products of respiration, or incorrect combinations of reactants).

Answer:

A. carbon dioxide + water + light energy → glucose + oxygen