What happens in photosystem 1 and photosystem 2?
Photosystem 1: Released high energy electrons are replaced by the releasing energy of photolysis. Photosystem 2: Released high energy electrons are replaced by the electrons released from photosystem II.
What is photosystems I and II function?
Two large membrane protein complexes, photosystems I and II (abbreviated as PS I and PS II, respectively) are embedded in this membrane. They catalyze the initial step of photosynthesis, the light induced charge separation across the photosynthetic membrane.
What is the purpose of photosystems 1 and 2 in the thylakoid membrane?
In oxygenic photosynthesis Both photosystems I and II are required for oxygenic photosynthesis. Oxygenic photosynthesis can be performed by plants and cyanobacteria; cyanobacteria are believed to be the progenitors of the photosystem-containing chloroplasts of eukaryotes.
What happens in photosystem II?
Photosystem II is the first link in the chain of photosynthesis. It captures photons and uses the energy to extract electrons from water molecules. As these electrons flow down the chain, they are used to pump hydrogen ions across the membrane, providing even more power for ATP synthesis.
What is the function of photosystem in photosynthesis?
Photosystems are the functional units for photosynthesis, defined by a particular pigment organization and association patterns, whose work is the absorption and transfer of light energy, which implies transfer of electrons. Physically, photosystems are found in the thylakoid membranes.
What is the role of photosystem 2 in photosynthesis?
What is the role of photosystem 2?
Photosystem II (PSII) is a multi-component pigment-protein complex that is responsible for water splitting, oxygen evolution, and plastoquinone reduction.
In what ways are photosystem I and II similar?
How photosystem I and photosystem II similar? How are they different? Both photosystems, pigments add energy from light to the electrons. Photosystem II occurs before photosystem I but it was discovered after photosystem I.