A researcher tracks Carbon-14 in a leaf. Which molecule is the first stable carbohydrate produced during the reduction phase of the Calvin cycle?
Q1. A researcher tracks Carbon-14 in a leaf. Which molecule is the first stable carbohydrate produced during the reduction phase of the Calvin cycle?
Answer: Glyceraldehyde-3-phosphate
Explanation: G3P is the direct carbohydrate product of the Calvin cycle. Glucose is wrong because it is synthesized from G3P in later steps.