2
lesson pretestMultiple Choice

Pretest

Question 2 • CMS 2026-2027 Biology CREDIT RECOVERY

Which is the correct chemical equation for photosynthesis?

Answer
A
6 CO sub 2 plus 6 cap h sub 2 cap o rightarrow cap c sub 6 cap h sub 12 cap o sub 6 plus 6 cap o sub 2
B
6 cap o sub 2 plus 6 cap h sub 2 cap o rightarrow cap c sub 6 cap h sub 12 cap o sub 6 plus 6 CO sub 2
C
3 CO sub 2 plus 3 cap h sub 2 cap o plus 3 cap o sub 2 rightarrow cap o sub 6 cap h sub 12 cap o sub 6
D
cap c sub 6 cap h sub 12 cap o sub 6 plus 6 cap o sub 6 rightarrow 6 CO sub 2 plus 6 cap h sub 2 cap o

Explanation

Photosynthesis uses carbon dioxide and water to make glucose and oxygen. The balanced equation is 6 CO₂ + 6 H₂O → C₆H₁₂O₆ + 6 O₂, which matches choice A. The other choices do not show the correct reactants and products in the proper direction or proportions.

AI-written and checked against the verified answer.

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