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Yes, the reaction at Photosystem I (PSI) requires light to function. Light energy is absorbed by pigments within PSI, which excites electrons and initiates the process of electron transport. This energization is essential for the reduction of NADP+ to NADPH, a key component in the light-dependent reactions of photosynthesis. Without light, PSI cannot effectively carry out its role in converting solar energy into chemical energy.
What else can I help you with?
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
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 a role of photosystem 2 in light reactions?
Photosystem two produces O2, ATP, and NADP+
Photosynthesis consists of two types of reactions?
There is a light reaction and a dark reaction (the Calvin Cycle). The light reaction is divided into 3 parts, Photosystem II, the Electron Transport Chain, and Photosystem I. The light reaction begins in Photosystem II when light hits the thylakoid so the chlorophyll loses and electron, and the electron moves up in energy levels and reaches the primary anceptor. From here it passes through the electron transport chain which is similar to the electron transport chain in cellular respiration, but it occurs in the thykaloids proton gradient is reversed through the membrane. Then it enters phtosystem I which is essentially the same thing as photosystem I, and the electrons from there pass through another electron transport chain. This produces ATP and NADPH which are used in the dark reaction, or Calvin Cycle, which is again similar to the Citric Acid Cycle but it begins with Acetyl acetate and produces 2 ATP 6 NADH and 1 FADH 2 per every 2 turns which are required to produce one glucose molecule, the ultimate goal of photosynthesis. I hope this was enough detail.
What fills the electron hole in photsystem 1 and 2?
In photosystem 2- water(photolysis) In photosystem 1 - electron from photosystem 2
Photosystem 1 and photosystem 2?
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. Hope this helps!
What is contained in each photosynthetic unit of photosystem 1?
Photosystem I contains photosynthetic units with :- 200 or more molecules of chlorophyll a,- small amounts of chlorophyll b- protein saddled carotenoid pigment,-a pair of specialized reaction-center molecules of chlorophyll called P700
What does the energy come from to make NADPH in the light reaction?
Photosystem 1
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 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.
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.
How do the reaction centers of photosystem you and II differ?
Photosystem 1 has chlorophyll a molecule which absorbs maximum light of 700 nm and is called P700 whereas photosystem 2 has chlorophyll a molecule which absorbs light of 680 nm and is called P680.
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
How do photosystem 1 and 2 allow the calvin cycle to work?
No. Photosystems I and II are where light-dependent reactions occur, while the Calvin Cycle is where light-independent reactions occur. Photosynthesis begins with Photosystem II, then Photosystem I, then the products from there go to the Calvin Cycle. (yes photosystem II comes before photosystem I)
What Is a role in photosystem 1?
In photosystem 1, the role of the reaction center chlorophyll is to absorb photons and initiate the electron transport chain. It passes excited electrons to an electron acceptor, which then moves them through a series of electron carriers to produce NADPH. This process is essential for the conversion of light energy into chemical energy during photosynthesis.
Photosynthesis consists of two types of reactions?
There is a light reaction and a dark reaction (the Calvin Cycle). The light reaction is divided into 3 parts, Photosystem II, the Electron Transport Chain, and Photosystem I. The light reaction begins in Photosystem II when light hits the thylakoid so the chlorophyll loses and electron, and the electron moves up in energy levels and reaches the primary anceptor. From here it passes through the electron transport chain which is similar to the electron transport chain in cellular respiration, but it occurs in the thykaloids proton gradient is reversed through the membrane. Then it enters phtosystem I which is essentially the same thing as photosystem I, and the electrons from there pass through another electron transport chain. This produces ATP and NADPH which are used in the dark reaction, or Calvin Cycle, which is again similar to the Citric Acid Cycle but it begins with Acetyl acetate and produces 2 ATP 6 NADH and 1 FADH 2 per every 2 turns which are required to produce one glucose molecule, the ultimate goal of photosynthesis. I hope this was enough detail.
