Question

modeling photosynthesis
use the information from the equation and table to answer the question.
6a + 6b → c + 6d
which row accurately represents photosynthesis when substituted into the equation?
options: 1, 2, 3, 4
table (columns: a, b, c, d; rows: 1, 2, 3, 4)
row 1: a: c₆h₁₂o₆, b: h₂o, c: co₂, d: o₂
row 2: a: h₂o, b: o₂, c: c₆h₁₂o₆, d: co₂
row 3: a: co₂, b: h₂o, c: c₆h₁₂o₆, d: o₂
row 4: a: o₂, b: c₆h₁₂o₆, c: h₂o, d: co₂

Explanation:

Step1: Recall Photosynthesis Equation

The photosynthesis equation is \( 6CO_2 + 6H_2O \xrightarrow[\text{Light}]{\text{Chlorophyll}} C_6H_{12}O_6 + 6O_2 \). Comparing with \( 6A + 6B
ightarrow C + 6D \), we identify: \( A = CO_2 \), \( B = H_2O \), \( C = C_6H_{12}O_6 \), \( D = O_2 \).

Step2: Analyze Each Row

• Row 1: A is \( C_6H_{12}O_6 \) (product, not reactant) – incorrect.
• Row 2: A is \( H_2O \), B is \( O_2 \) (O₂ is product) – incorrect.
• Row 3: A is \( CO_2 \), B is \( H_2O \), C is \( C_6H_{12}O_6 \), D is \( O_2 \) – matches photosynthesis equation.
• Row 4: A is \( O_2 \) (product), B is \( C_6H_{12}O_6 \) (product) – incorrect.

Answer:

3 (Row 3)