Which two molecules link the light reaction to the dark reaction?
AATP and NADPH made in the light step
BGlucose and oxygen made later in respiration
CCarbon dioxide and water from outside
DPyruvate and lactate from glycolysis
Answer & Solution
Correct answer: A. ATP and NADPH made in the light step
1. The light reaction stores energy as ATP and NADPH.
2. Both diffuse into the stroma.
3. The Calvin cycle uses them to convert CO2 to sugar.
4. So ATP and NADPH link the two reactions.
_Source: Selina Concise Biology Class 10, Ch on Photosynthesis (Mistral OCR'd PDF), section on link_
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