4.3 Stage One: Light Dependant (Thylakoid) Created by Kati Winkle
In stage one chlorophyll and other molecules absorb energy from the sunlight.
The energy is then transferred to electrons to leave the chlorophyll.
These electrons then enter the electron transport chain, which is made of proteins in the thyakoid membrane.
The electron transport chain moves electrons from protein to protein out of the cell.
The energy pumps hydrogen ions across the thylakoid membrane from the outside to the inside.
This transport of hydrogen ions makes for a higher concentration inside of the thylakoid membrane.
During this process water molecules are split apart into oxygen, hydrogen ions, and electrons.
The oxygen is released and the electrons from the water molecule take the place of the electrons that left the chlorophyll.
The energy is then transferred to electrons to leave the chlorophyll.
These electrons then enter the electron transport chain, which is made of proteins in the thyakoid membrane.
The electron transport chain moves electrons from protein to protein out of the cell.
The energy pumps hydrogen ions across the thylakoid membrane from the outside to the inside.
This transport of hydrogen ions makes for a higher concentration inside of the thylakoid membrane.
During this process water molecules are split apart into oxygen, hydrogen ions, and electrons.
The oxygen is released and the electrons from the water molecule take the place of the electrons that left the chlorophyll.