8 Questions
What is the role of the light-dependent reactions in photosynthesis?
The light-dependent reactions use light energy and water to produce oxygen gas and convert ADP and NADP+ into the energy carriers ATP and NADPH.
What happens during the light-independent reactions?
During the light-independent reactions, ATP and NADPH from the light-dependent reactions are used to synthesize high-energy sugars.
What is the alternative name for the light-independent reactions?
The light-independent reactions are commonly referred to as the Calvin Cycle.
How do carbon dioxide molecules enter the Calvin cycle?
Carbon dioxide molecules (CO2) enter the Calvin cycle from the atmosphere.
What happens to the twelve 3-carbon compounds produced in the Calvin cycle?
At midcycle, two of the twelve 3-carbon molecules are removed from the cycle to become building blocks, while the remaining ten 3-carbon molecules are converted back into six 5-carbon molecules.
What are the products of the light-dependent reactions of photosynthesis?
oxygen gas, ATP, NADPH
What is the role of ATP and NADPH from the light-dependent reactions in the light-independent reactions?
to synthesize high-energy sugars
How many 3-carbon compounds are produced for every six carbon dioxide molecules that enter the Calvin cycle?
twelve
Test your knowledge on the light-dependent and light-independent reactions of photosynthesis! Learn about how light energy and water are used to produce oxygen and energy carriers, and how ATP and NADPH are utilized in the synthesis of high-energy sugars during the Calvin Cycle.
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