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Photosystem I and II are two types of reaction centers found in thylakoid membranes, which are the sites of protein synthesis located in the leaves of plants.
The function of reaction centers is to convert light energy into chemical energy (photophosphorylation).
Now the difference between photosystem I and photosystem II is that each is able to absorb a particular wavelength.
Photosystem 2 has a maximum absorption at a wavelength of 680 nanometers.
Photosystem 1 best absorbs light at a wavelength of 700 nanometers.
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Photosystem I and Photosystem II are protein complexes involved in the light-dependent reactions of photosynthesis. Photosystem II functions first and absorbs light to energize electrons, which are then passed through an electron transport chain. Photosystem I further energizes these electrons using light before they are used to reduce NADP+ to NADPH.
They are called photosystem one and two (PSI and PSII). Oddly PSII comes before PSI (it was discovered first). Both photosystems are employed by photosynthesis which excite photons and convert the energy. This energy gets sent to the Calvin cycle where Pyruvate (a half sugar) is produced. The plants store this sugar as a food source.
To be brief, photosynthesis is separated into two parts: the light reactions (photosystem 2 and 1) and the dark reactions (the Calvin cycle). The photosystems produce NADP+ which are powerful electron acceptors and ATP. Both of which power the Calvin cycle. The photosystems absorb water and release oxygen. The chief difference between photosystem 2 and 1 is that they absorb different wavelengths of light more effectively.
chlorophyll (a) and chlorophyll (b) Are two most common types of chlorophyll
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Where does photosystem 2 and photosystem 1 occur?
Photosystem 2 is located in the thylakoid membrane of the chloroplasts, while Photosystem 1 is located downstream from Photosystem 2 in the thylakoid membrane. Both photosystems are important for light-dependent reactions during photosynthesis.
What protein complex absorbs in energy that used to produce NADPH?
Photosystem 1
An electron transport chain connects photosystem1 and photosystem2?
They return to Photosystem I
How do photosystem 1 and 2 allow the calvin cycle to work?
Photosystem I and Photosystem II are involved in the light reactions of photosynthesis. Photosystem II absorbs light energy to split water molecules and produce ATP, while Photosystem I absorbs light energy to produce NADPH. Both ATP and NADPH are then used in the Calvin cycle to convert carbon dioxide into glucose. Without the products of the light reactions, the Calvin cycle cannot proceed.
How many times are electrons energized during photosynthesis?
The thylakoid membrane contains 2 photosytems, known as Photosystem I and Photosystem II. Together, they function to absorb light and transfer energy to electrons.
What fills the electron hole in photsystem 1 and 2?
In photosystem 2- water(photolysis) In photosystem 1 - electron from photosystem 2
What are the products of photosystem 2 and photosystem 1?
NADPH
Where does photosystem 2 and photosystem 1 occur?
Photosystem 2 is located in the thylakoid membrane of the chloroplasts, while Photosystem 1 is located downstream from Photosystem 2 in the thylakoid membrane. Both photosystems are important for light-dependent reactions during photosynthesis.
Which photosystem is used first in photosynthesis?
Photosystem 2 happens in photosynthesis before photosystem 1. However they are numbered in order of how they were discovered. Photosystem 1 was discovered before photosystem 2. In photosynthesis the order of them is 2 then 1. meaning that photosystem 1 was discovered 1st but photosystem 2 happens 1st in photosynthesis
Where does photosystem 2 and photosystem 1 take placein the organelle?
Photosystems I and II are both in the thylakoid membranes of the chloroplast.
What is a role of photosystem 2 in light reactions?
Photosystem two produces O2, ATP, and NADP+
What protein complex absorbs in energy that used to produce NADPH?
Photosystem 1
What happens to electrons when pigments in photosystem absorb lights?
Photosystem's electron travel through the electron transport chain(etc) where ATP is produced and then back to the photosystem. In non-cyclic photophosphorylation, Photosystem II electron then is absorbed by photosystem I, photosystem I electron used to form NADPH and photosystem II gets its electron from photolysis of water. For you unfortunate children using Novanet: They move through an electron transport chain to photosystem 1.
Is photosystem 2 light dependent?
Yes, photosystem 2 is a light-dependent process in photosynthesis. It absorbs photons to initiate the light-dependent reactions of photosynthesis, where it helps generate oxygen and produce ATP and NADPH.
What Photosystem is older in terms of evolutionary history?
Photosystem II is older in terms of evolutionary history compared to Photosystem I. Photosystem II is thought to have evolved before Photosystem I as it evolved to oxidize water in order to provide electrons for the electron transport chain, which Photosystem I then uses to reduce NADP+ to NADPH.
Which sentence best describes what happens after sunlight hits photo system 2?
After sunlight hits photosystem 2, it excites electrons within photosystem 2. These electrons are then passed down an electron transport chain to photosystem 1, where they help generate ATP through a series of redox reactions.
How does electrons move photosytem II to photosytem?
Electrons move from Photosystem II to Photosystem I through a series of electron carrier molecules in the thylakoid membrane, known as the electron transport chain. During photosynthesis, light energy is used to transfer electrons along this chain, creating a proton gradient that drives ATP synthesis. This process is essential for the production of energy-rich molecules in the form of ATP and NADPH.
