Question

Order the steps through which ATP synthesis occurs during the light-dependent reactions of photosynthesis in plants. Hydrogen ions diffuse across the thylakoid membrane into the stroma through ATP synthase. The concentration of hydrogen ions in the thylakoid space increases. Energy from the Sun ejects electrons from chlorophyll and splits water molecules to yield hydrogen ions. ATP synthase uses the energy released as hydrogen ions move from regions of high concentration to regions of low concentration to make ATP. Electrons move down the electron transport chain, releasing energy that pumps hydrogen ions into the thylakoid space. ? ? ? ?

Answer 1

Answer:

Light-dependent reaction of the photosynthesis takes place in the thyllakoid membrane of the chloroplast. It converts solar energy into the chemical energy (ATP and NADPH) which is then utilized in the light-independent reaction to fix carbon into glucose or food.

The correct order of events that take place during light-dependent reaction would be:

Energy from the Sun ejects electrons from chlorophyll and splits water molecules to yield hydrogen ions.

                                                         ↓

Electrons move down the electron transport chain, releasing energy that pumps hydrogen ions into the thylakoid space.

                                                         ↓

The concentration of hydrogen ions in the thylakoid space increases.

                                                         ↓

Hydrogen ions diffuse across the thylakoid membrane into the stroma through ATP synthase.

                                                         ↓

ATP synthase uses the energy released as hydrogen ions move from regions of high concentration to regions of low concentration to make ATP.