Multiple choice

The dark reaction of photosynthesis or Calvin Cycle refers to the pathway in which the free energy of ATP and reducing power of NADPH are used to fix CO2 to form carbohydrate. The first stable product of the dark reaction of photosynthesis is called _____________.

  1. RuBP

  2. glyceraldehyde-3-phosphate

  3. RuBisCO

  4. phosphoglycolate

  5. 3-Phosphoglycerate

Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

3-Phosphoglycerate (PGA), a 3 carbon molecule is the first stable product of dark reaction of photosynthesis. Hence this pathway is also called C3 pathway.