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Multiple Choice
What is the primary end product of the Calvin cycle in photosynthesis?
A
Glyceraldehyde-3-phosphate (G3P)
B
Pyruvate
C
Glucose
D
ATP
Verified step by step guidance
1
Understand the Calvin cycle: 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 of photosynthesis.
Identify the main purpose of the Calvin cycle: The primary function of the Calvin cycle is to convert carbon dioxide and water into organic molecules that can be used by the plant for energy and growth.
Recognize the key molecule produced: The Calvin cycle produces glyceraldehyde-3-phosphate (G3P), a 3-carbon sugar molecule, which is the primary end product.
Consider the role of G3P: G3P can be used to form glucose and other carbohydrates, but it is not directly converted into glucose within the Calvin cycle itself.
Clarify the options: While ATP and pyruvate are important molecules in cellular processes, they are not the primary end products of the Calvin cycle. G3P is the direct product of the cycle.