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Multiple Choice
Which type of energy is utilized by the enzyme Rubisco during the Calvin cycle in photosynthesis?
A
ATP
B
FADH2
C
GTP
D
NADH
Verified step by step guidance
1
Understand the role of Rubisco in the Calvin cycle: Rubisco is an enzyme that catalyzes the first major step of carbon fixation in the Calvin cycle, which is part of photosynthesis.
Identify the energy source used in the Calvin cycle: The Calvin cycle primarily uses ATP and NADPH as energy sources to drive the reactions that convert carbon dioxide into glucose.
Recognize the function of ATP in the Calvin cycle: ATP provides the energy required for the conversion of 3-phosphoglycerate into glyceraldehyde-3-phosphate, a key step in the cycle.
Differentiate between ATP and other energy carriers: While ATP is used in the Calvin cycle, other molecules like FADH2, GTP, and NADH are involved in different metabolic processes, such as cellular respiration.
Conclude the type of energy utilized by Rubisco: Based on the understanding of the Calvin cycle, ATP is the correct energy source utilized by Rubisco during photosynthesis.