College

Which compound is a metabolic intermediate of the light-independent reactions in photosynthesis?

A. ATP
B. PGA
C. RuBP
D. NADPH

Answer :

Final answer:

The compound that acts as a metabolic intermediate in the light-independent reactions (Calvin cycle) of photosynthesis is 3-PGA. This compound is produced when RuBP reacts with CO2. It is then converted into G3P, which is essential for glucose production.


Explanation:

Metabolic Intermediates in Light-Independent Reactions

The light-independent reactions of photosynthesis, also known as the Calvin cycle, convert carbon dioxide into organic compounds using energy from ATP and reducing power from NADPH produced in the light-dependent reactions. The key metabolic intermediate associated with this process is 3-PGA (3-phosphoglycerate). In this process, ribulose bisphosphate (RuBP) reacts with CO2 to form 3-PGA.

Conversion Process

The 3-PGA molecules are then reduced to glyceraldehyde 3-phosphate (G3P) using ATP and NADPH:

PGA + NADPH + ATP —> G3P + NADP+ + ADP + Pi

This conversion is crucial for synthesizing carbohydrates and is a significant step in the overall process of photosynthesis.


Learn more about photosynthesis here:

https://brainly.com/question/29764662