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Multiple Choice
In the context of organic chemistry, which of the following is a requirement for a light-independent reaction, such as the Calvin cycle?
A
Carbon dioxide and glucose
B
Light and chlorophyll
C
Oxygen and water
D
ATP and NADPH
Verified step by step guidance
1
Understand the context: The Calvin cycle is a series of biochemical reactions that occur in the stroma of chloroplasts in photosynthetic organisms. It is part of the light-independent reactions, meaning it does not require light directly to proceed.
Identify the main inputs: The Calvin cycle requires ATP and NADPH, which are produced during the light-dependent reactions of photosynthesis. These molecules provide the energy and reducing power needed for the cycle.
Recognize the role of ATP: ATP (adenosine triphosphate) acts as an energy carrier. It provides the necessary energy for the conversion of carbon dioxide into glucose during the Calvin cycle.
Recognize the role of NADPH: NADPH (nicotinamide adenine dinucleotide phosphate) acts as a reducing agent. It donates electrons needed for the reduction of carbon dioxide into glucose.
Connect the inputs to the process: In the Calvin cycle, ATP and NADPH are used to convert carbon dioxide into glucose through a series of reactions. This process is crucial for the synthesis of carbohydrates in plants.