The raw materials reactants for photosynthesis are oxygen an

The raw materials (reactants) for photosynthesis are oxygen and water oxygen and carbon dioxide carbon dioxide and water carbohydrates and water carbohydrates and carbon dioxide In photosynthesis, oxygen is derived from RuBP NADPH H2O CO2 What is the source of electrons for the reaction center of photo system II in photosynthesis? Water oxygen glucose NADPH

Solution

Answers :

Question number 7 : The correct answer is C ( Corbohydrates and water). During photosynthesis water is oxidized and CO₂ is reduced.

Question number 8 : The correct answer is C (H₂O). Electrons are carried between the two photosystems by the soluble protein plastocyanin, a one-electron carrier functionally similar to cytochrome c of mitochondria. To replace the electrons that move from PSII through PSI to NADP⁺, cyanobacteria and plants oxidize H₂O producing O_2. This process is called oxygenic photosynthesis to distinguish it from the anoxygenic photosynthesis of purple and green sulfur bacteria.

Question number 9 : The correct answer is A ( water/H₂O). Photosystem II is associated with the photolysis of water that results in release and oxygen and the elctrons reduce PSII reaction centre.