Question

which of the following statements about the dark reactions is true?
a. dark reactions occur in the thylakoids of chloroplasts.
b light energy is converted to chemical energy during the dark reactions
c carbon dioxide is converted to sugar using atp and nadph during the dark reactions
d. all of the above
please select the best answer from the choices provided
a
b
c
d

Explanation:

• Option a: Dark reactions occur in the stroma of chloroplasts, not the thylakoids. Thylakoids are for light - dependent reactions.
• Option b: Light energy is converted to chemical energy (ATP and NADPH) during light - dependent reactions, not dark reactions.
• Option c: In the dark reactions (Calvin cycle), carbon dioxide is fixed and using ATP and NADPH (from light - dependent reactions), it is converted to sugar (glucose).

Answer:

C. Carbon dioxide is converted to sugar using ATP and NADPH during the dark reactions