Which of the following is a primary product of the Calvin cycle in photosynthesis?

• A. $\mathrm{Glucose}$
• B. $\mathrm{ATP}$
• C. $\mathrm{NADPH}$
• D. $O{2}_{}$

Answer: (A)

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 process of photosynthesis and is responsible for converting carbon dioxide and other compounds into glucose.
2. Identify the main purpose of the Calvin cycle: The primary function of the Calvin cycle is to synthesize glucose from carbon dioxide and water using the energy derived from ATP and NADPH produced in the light-dependent reactions of photosynthesis.
3. Recognize the products of the Calvin cycle: The Calvin cycle results in the production of glucose, which is a carbohydrate that serves as an energy source for plants and other organisms. ATP and NADPH are used during the cycle but are not products of it.
4. Differentiate between the products of the Calvin cycle and the light-dependent reactions: ATP and NADPH are generated during the light-dependent reactions and are consumed in the Calvin cycle to drive the synthesis of glucose. Oxygen is a byproduct of the light-dependent reactions, not the Calvin cycle.
5. Conclude the primary product: Based on the understanding of the Calvin cycle, the primary product is glucose, which is synthesized from carbon dioxide using the energy from ATP and NADPH.