What happens in photosystem II quizlet?
Photosystem II triggers chemiosmosis and ATP synthesis in the chloroplast. Electrons are passed from the reduced pheophytin to an electron transport chain in the thylakoid membrane. This ETC is similar in structure and function to the ETC in mitochondria.
What happens at photosystem II?
Photosystem II obtains replacement electrons from water molecules, resulting in their split into hydrogen ions (H+) and oxygen atoms. The oxygen atoms combine to form molecular oxygen (O2), which is released into the atmosphere. The hydrogen ions are released into the lumen.
What are photosystems I and II quizlet?
Terms in this set (27) photosystem I. P700, makes NADPH, does not take place first. photosystem II. One of two light-capturing units in a chloroplast’s thylakoid membrane; it has two molecules of P680 chlorophyll a at its reaction center, makes ATP and uses electrons from light.
What is the difference between photosystem I and photosystem II quizlet?
What is the difference between Photosystem II and Photosystem I? Photosystems II and I have different chlorophylls. PS II has P680 and PS I has P700.
What’s the difference between photosystem 1 and 2?
Chlorophyll A-680 is the active reaction center of photosystem 2. The main difference between photosystem 1 and 2 is that PS I absorbs longer wavelengths of light (>680 nm) whereas PS II absorbs shorter wavelengths of light (<680 nm).
Why is the photosystem II important?
Photosystem II is the first link in the chain of photosynthesis. It captures photons and uses the energy to extract electrons from water molecules.
Which is a role of photosystem II in the light reactions?
Photosystem II (PSII) is a membrane protein supercomplex that executes the initial reaction of photosynthesis in higher plants, algae, and cyanobacteria. It captures the light from the sun to catalyze a transmembrane charge separation.
What happens between photosystem II and photosystem I?
PS I and PS II are the two photosystems which drive the light reaction of photosynthesis. The first stage of the light reaction occurs in PS II whereas the final stage of the light reaction occurs in PS I. Each of the two photosystems are made up of a collection of proteins and pigments.
How does photosystem 2 differ from photosystem?
The main difference between Photosystem I and Photosystem II is that Photosystem I absorb sunlight at a wavelength of about 700nm while Photosystem II absorbs sunlight at a wavelength of 680nm in the red region.
What is the difference between photosystem I and photosystem II?
The main difference between photosystem 1 and 2 is that PS I absorbs longer wavelengths of light (>680 nm) whereas PS II absorbs shorter wavelengths of light (<680 nm).
What is the main difference between photosystem II and photosystem one?