Multiple Choice
Which color of visible light is most effective in driving the light reactions of photosynthesis in green plants?
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9. Photosynthesis
Light Reactions of Photosynthesis
Multiple Choice
Which of the following best lists the end products of the light-dependent reactions of photosynthesis?
A
Glucose, NADPH, and O\(_2\)
B
ATP, NADPH, and O\(_2\)
C
Glucose, ATP, and CO\(_2\)
D
NADH, FADH\(_2\), and O\(_2\)
Verified step by step guidance1
Understand that the light-dependent reactions of photosynthesis occur in the thylakoid membranes of chloroplasts and are responsible for converting light energy into chemical energy.
Recall that the primary products of the light-dependent reactions are ATP (energy currency), NADPH (electron carrier), and O\(_2\) (a byproduct of water splitting).
Eliminate incorrect options by identifying that glucose and CO\(_2\) are not direct products of the light-dependent reactions. Glucose is produced in the Calvin cycle (light-independent reactions), and CO\(_2\) is a reactant in the Calvin cycle, not a product.
Recognize that NADH and FADH\(_2\) are electron carriers used in cellular respiration, not photosynthesis, so any option listing them is incorrect.
Conclude that the correct answer is ATP, NADPH, and O\(_2\), as these are the direct end products of the light-dependent reactions of photosynthesis.
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