Question

1. add the molecule you identified in the previous question to your chemical equation.

o₂ + c₆h₁₂o₆ → co₂ + h₂o
h₂o + c₆h₁₂o₆xrightarrow{light}co₂ + o₂
h₂o + co₂ → c₆h₁₂o₆ + o₂
co₂ + h₂oxrightarrow{light}c₆h₁₂o₆ + o₂

Explanation:

Step1: Analyze photosynthesis equation

Photosynthesis uses \(CO_2\) and \(H_2O\) with light to produce \(C_6H_{12}O_6\) and \(O_2\).

Step2: Check each option

• Option \(O_2 + C_6H_{12}O_6

ightarrow CO_2 + H_2O\) is respiration.

• Option \(H_2O + C_6H_{12}O_6\xrightarrow{light}CO_2 + O_2\) is incorrect as glucose is a product in photosynthesis.
• Option \(H_2O + CO_2

ightarrow C_6H_{12}O_6 + O_2\) misses light (energy source).

• Option \(CO_2 + H_2O\xrightarrow{light}C_6H_{12}O_6 + O_2\) is correct as it has \(CO_2\), \(H_2O\), light (energy), \(C_6H_{12}O_6\) and \(O_2\) in the right places.

Answer:

\(CO_2 + H_2O\xrightarrow{light}C_6H_{12}O_6 + O_2\) (the fourth option)