light dependent stage

What is the fist stage (what gos into the photo system)

The lysis of water occurs

The oxygen is released into the air

The electron foes int othe photo system 2

The hydrogen remans in the IMS

What happens to the electron as it goes into the photo system

What does the electron go through

How dos the electron release energy

What does the energy do

It absorbs wavelengths of light

It then pass through electron transport chain and through redox reactions energy is released that brings H+ into the iMS

What happens after the electron goes through the ETC after p.s 2

It follows again into ps1 with being excited

What happens to the H+ that get moved to IMS

Through proton gradient

H+ moves down electrochemical gradient and through chemiosmosis goes through ATP synthase (enzyme) and causes ADP to bind with Phoshpae group and make ATP

What happens to the H+ after being passed through ATP synthase

It joins with the electron from PS1 with NADP

To becomes reduced NADPH and takes onto next stage

What is the cyclic phosphorylation

Where the electron doesn’t go through PSII but only goes to PSI and only gets excited there and it still causes H+ to move into IMS through redox reactions - still makes ATP and NADPH

When is the cyclic phosphorylation used

When there is a lack of water as it recycles the same electrons