Question

Drag the numbers on the left to complete the sentence on the right. Numbers may be used once, more than once, or not at all.

ResetHelp For every molecule of O2 that is released by photosystem II, _______H2O molecules are needed, which together pass__________ electrons to the PS II reaction-center complex.

Answer 1

For every molecule of O2 that is released by photosystem II, 2 H2O molecules are needed, which together pass 4 electrons to the PS II reaction-center complex.

Step-by-step explanation:

Photosystem II can be described as a protein complex through which oxygen is released using water. Light energy is used in this process hence termed as light dependent reactions. This reaction happens in the thylakoid regions. As a molecule of water contains 2 hydrogen atoms, hence a molecule of H2O will release two electrons. two molecules of H2O will release 4 electrons. The break down of water also results in the release of oxygen.