Question

Journey of $H^{+}$ from stroma to lumen is

• A. Diffusion
• B. Facilitated diffusion
• C. Active Pumping
• D. Mass flow

Answer 1

The correct option is B Facilitated diffusion

The H${}^{+}$ ions from the stroma are carried to the lumens by a cytochrome in the electron transport chain connecting the two photosystems. Thus, movement of H${}^{+}$ from stroma to lumen occurs by facilitated diffusion. So, the correct option is 'Facilitated diffusion'.