Light Reaction

1.

Plant is watered. H₂0 is split by ‘WSE’ (water splitting enzyme)

2.

Oxygen leaves as O2.  Hydrogen collects in thylakoid

3.

Sun shines on a leaf.  Sun shines on a chlorophyll glob

4.

The sun’s photons give so much energy to the plant, that an electron from a Hydrogen is removed from the thylakoid and placed into the chlorophyll

5.

H+ gathers in the lumen of the thylakoid. Chemiosmosis will occur via ATP synthase

6.

The excited electron is placed in the PEA (primary electron acceptor), and then follows its first Electron Transport Chain

7.

As it follows the ETC (PII), it is carried by plastiquinone. It gradually loses energy.  The last bit of energy is placed in the carrier protein, allowing a H+ ion to be brought INTO the lumen of the thylakoid via active transport

8.

2 electrons are re-excited, following the 2nd ETC (PI).  Plastocyanine (protein) continues the travels of the electron to complete the PI ETC.

9.

The electrons are released out of the thylakoid membrane to form NADPH from NADH+ with help of NADP+ reductase