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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
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What molecule absorbs sunlight in photosynthesis?
Photosystem II
Water participates directly in the light reactions of photosynthesis by?
Water participates directly in the light reactions of photosynthesis by donating electrons to photosystem II during the process of photolysis. These electrons are used to replace the ones lost by chlorophyll when it absorbs light energy, allowing the photosystem to continue absorbing light and generating ATP and NADPH for the Calvin cycle.
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 is photosystem 11?
Photosystem II is a protein complex in plants and algae that is essential for the process of photosynthesis. It absorbs light energy and uses it to drive the transfer of electrons from water to plastoquinone. This eventually leads to the production of ATP and NADPH, which are important energy carriers used in the Calvin cycle to convert carbon dioxide into sugar.
What is a photosystem?
A photosystem is a cluster of pigments and proteins in the thylakoid membrane of chloroplasts, involved in the light-dependent reactions of photosynthesis. It captures light energy and converts it into chemical energy, which is used to drive the production of ATP and NADPH.
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.
Why did photosystem II evolve first?
Photosystem II evolved first in order to utilize light energy to split water molecules and release oxygen as a byproduct, which was crucial for the early Earth's atmosphere and ecosystem. This oxygenic photosynthesis process eventually paved the way for the evolution of photosystem I and other complex biological processes.
What groups of molecule are involved in photosynthesis?
Photosystem
What molecule absorbs sunlight in photosynthesis?
Photosystem II
What happen to the light energy that is trapped by the chloroplast during the first stage of photosynthesis?
Light energy is not exactly trapped. The light energy excites the electron in the reaction centres of photosystem I and photosystem II. The electron excites and transfers to the electron transport chain ( chain of electron carriers), this produces ATP. Then the electron of photosystem II is transferred by photosystem I and the electron of the photosystem I is used with H+ and NADP to form NADPH. Photosystem II gets back an electron from photolysis of water.
What protein complex absorbs in energy that used to produce NADPH?
Photosystem 1
What sequence accurately reflects the flow of electrons in photosynthesis?
In photosynthesis, electrons flow from water molecules to photosystem II, then to photosystem I, and finally to NADP+ ultimately producing NADPH. Along the way, the electrons generate a proton gradient that drives ATP production.
Water participates directly in the light reactions of photosynthesis by?
Water participates directly in the light reactions of photosynthesis by donating electrons to photosystem II during the process of photolysis. These electrons are used to replace the ones lost by chlorophyll when it absorbs light energy, allowing the photosystem to continue absorbing light and generating ATP and NADPH for the Calvin cycle.
What is the start of photosynthesis?
pigments in photosystem II absorb light
The energy from photons hitting photosystem 2 is used to produce what?
ATP
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.
Is photosynthesis a system?
Photosynthesis is not a system. It is a process in plants. It is very important process.Photosynthesis is a process of making sugars from CO2 and water by using light energy. Photosystem I and photosystem II are involved in this process to transfer electrons across the membrane. Photosynthesis occurs in plants algae and certain bacteria.
