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.

Answer 1

Answer:

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.

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.