Question: what is the relationship between photosystem 1 and 2?
Answer: The primary function of the photosystem I is in NADPH synthesis, where it receives the electrons from PS II. The primary function of the photosystem II is in the hydrolysis of water and ATP synthesis. The PSI is made up of two subunits which are psaA and psaB. The PS II is made up of two subunits made up of D1 and D2.