AP BIOLOGY

PHOTOSYNTHESIS

LIGHT DEPENDENT REACTIONS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is produced by the photolysis of two water molecules?
A
O2 + 4H+ + 4e-
B
O2 + 4H+ + 2e-
C
1/2 O2 + 2H+ + 2e-
D
1/2 O2 + 2H+ + 4e-
Explanation: 

Detailed explanation-1: -In this process of photolysis (“splitting by light”), H2O molecules are broken into hydrogen ions, electrons, and oxygen atoms. The electrons replace those originally lost from chlorophyll.

Detailed explanation-2: -photolysis of water produces protons, electrons and oxygen.

Detailed explanation-3: -Thus, the end products of the photolysis reaction are oxygen, NADPH and ATP.

Detailed explanation-4: -Photolysis of water is a process that breaks the hydrogen and oxygen of water that remains in the plant. This process takes place with the help of sunlight and it occurs in the grana of the chloroplast.

There is 1 question to complete.