Multiple Choice
Which of the following is one way to determine that a nutrient is essential for photosynthesis in plants?
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9. Photosynthesis
Introduction to Photosynthesis
Multiple Choice
When oxygen is released as a result of photosynthesis, from which molecule does it originate?
A
Chlorophyll
B
Water (H\(_2\)O)
C
Glucose (C\(_6\)H\(_{12}\)O\(_6\))
D
Carbon dioxide (CO\(_2\))
Verified step by step guidance1
Understand that photosynthesis is the process by which plants convert light energy into chemical energy, producing oxygen as a byproduct.
Recall the overall chemical equation for photosynthesis: 6CO\(_2\) + 6H\(_2\)O + light energy → C\(_6\)H\(_{12}\)O\(_6\) + 6O\(_2\). This shows that water (H\(_2\)O) is involved in the reaction.
Focus on the light-dependent reactions of photosynthesis, which occur in the thylakoid membranes of chloroplasts. During these reactions, water molecules are split in a process called photolysis.
Understand that photolysis involves the splitting of water (H\(_2\)O) molecules into oxygen (O\(_2\)), protons (H\(^+\)), and electrons. The oxygen released during photosynthesis originates from this splitting of water.
Conclude that the oxygen released as a result of photosynthesis comes specifically from the water (H\(_2\)O) molecules, not from chlorophyll, glucose, or carbon dioxide.
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