DENDROLOGY

TREE PHYSIOLOGY

PHOTOSYNTHESIS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
How does Photosystem II create O2?
A
It reduces H2O into H+ and O
B
O2 is actually generated in the Calvin Cycle
C
It Oxidizes H2O into H+ and O
D
Oxygen atoms are assembled in Photosystem II
Explanation: 

Detailed explanation-1: -Photosystem II is the first membrane protein complex in oxygenic photosynthetic organisms in nature. It produces atmospheric oxygen to catalyze the photo-oxidation of water by using light energy. It oxidizes two molecules of water into one molecule of molecular oxygen.

Detailed explanation-2: -The two electrons lost from photosystem II are replaced by the splitting of water molecules. Water splitting also releases hydrogen ions into the lumen.

Detailed explanation-3: -Answer and Explanation: The important component of photosystem 2, is the ability to absorb light energy to generate high energy electrons for the electron transport chain. Specifically, photosystem 2 will oxidize water to produce these high energy electrons.

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