Question

What is the source of the electrons that reduce 1,3-bisphosphoglyceric acid?

RuBP
NADPH
G3P
Sunlight

Answer 1

The source of the electrons that reduce 1,3-bisphosphoglyceric acid (1,3-BPG) in the Calvin Cycle is **NADPH**. In the Calvin Cycle, NADPH provides the reducing power needed to convert 1,3-BPG into glyceraldehyde-3-phosphate (G3P), which is a key intermediate in the synthesis of glucose and other carbohydrates.