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Multiple Choice
Which of the following are reactants in the Calvin Cycle?
A
Oxygen and NADPH
B
Glucose and water
C
NADH and FADH2
D
Carbon dioxide and ATP
Verified step by step guidance
1
Understand the Calvin Cycle: The Calvin Cycle is a series of biochemical reactions that take place in the stroma of chloroplasts in photosynthetic organisms. It is also known as the light-independent reactions or the dark reactions.
Identify the purpose of the Calvin Cycle: The main goal of the Calvin Cycle is to convert carbon dioxide and other compounds into glucose. It uses energy derived from ATP and NADPH, which are produced in the light-dependent reactions of photosynthesis.
Recognize the key reactants: The primary reactants in the Calvin Cycle are carbon dioxide (CO2), ATP, and NADPH. These molecules are essential for the fixation of carbon and the synthesis of glucose.
Differentiate from other molecules: Oxygen, NADH, and FADH2 are not involved in the Calvin Cycle. Oxygen is a byproduct of the light-dependent reactions, while NADH and FADH2 are involved in cellular respiration, not photosynthesis.
Conclude with the correct reactants: Based on the understanding of the Calvin Cycle, the correct reactants are carbon dioxide and ATP, along with NADPH, which is not listed in the options but is also a key reactant.