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What pigment is in thylakoids?
it is the group of 200-300 accessory photosynthetic pigment that are attached to the thylakoid and pass the light energy from one another until it reaches the reaction center. it is conical in shape for it has to absorb the maximum amount of light energy entering and it is embedded in the membrane( thylakoid).
What is the function of NADPH plus?
There is no NADPH+. However, there is NADPH, which is a product of non-cyclic electron flow in the light reactions of photosynthesis. NADP+ and two protons are transformed to NADPH and one proton via NADP+ reductase as the last step in photosystem II.
Sunlight excites electrons in the chlorophyll during the what?
During the light reaction, sunlight excites electrons of chlorophyll P680 in Photosystem One.
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 are 2 energy sources created in the light reactions?
Photosynthesis is one of them
What is the difference between photosystem one and two?
The difference between photosystem one and two is their type of light reaction.
What pigment is in thylakoids?
it is the group of 200-300 accessory photosynthetic pigment that are attached to the thylakoid and pass the light energy from one another until it reaches the reaction center. it is conical in shape for it has to absorb the maximum amount of light energy entering and it is embedded in the membrane( thylakoid).
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 the function of NADPH plus?
There is no NADPH+. However, there is NADPH, which is a product of non-cyclic electron flow in the light reactions of photosynthesis. NADP+ and two protons are transformed to NADPH and one proton via NADP+ reductase as the last step in photosystem II.
Explain how the energy of photons is transferred within a photosystem?
In a photosystem, an enzyme, known as the reaction center, is surrounded by proteins that enhance the absorption of light and transfer energy to it. The reaction center absorbs the light, which is comprised of photons, and then transfers the energy to one of two types of terminal electron acceptors.
Sunlight excites electrons in the chlorophyll during the what?
During the light reaction, sunlight excites electrons of chlorophyll P680 in Photosystem One.
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.
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 are 2 energy sources created in the light reactions?
Photosynthesis is one of them
How many photosystems are involved during the light reaction of photosynthesis?
The simplest look of photosynthesis will show that there are two photosystems. Photosystem II, P680, is important in initiating photosynthesis by exciting electrons to move down the electron transport chain. 680 nm is the optimal wavelength of light for this photosystem. Photosystem I, P700, transfers electrons to ferrodoxin which transfers electrons to the ferrodoxin NADP+ reductase; the NADPH formed here will be used in the Calvin cycle. 700 nm is the optimal wavelength of light for which this photosystem is most active.
During what stage of photosynthesis does glucose production occur?
Glucose production occurs in the 2nd stage of photosynthesis, the Calvin-Benson cycle. The first stage of photosynthesis captures much of the energy from light in order to store that energy in the glucose.
Are produced by reactions that take place in the thylakoids and are consumed by reactions in the stroma?
ATP and NADPH are produced by reactions in the thylakoids and are consumed by reactions in the stroma. The reason is because the reaction that takes place in the thylakoid is the light reaction and the one that takes place in the stroma is the light-independent reaction.
