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When the reaction center for photosystem II loses and electron how is the electron replaced?
Wiki User
∙ 8y ago
It comes from H20, the Oxygen molecule joins with another 0 molecule to form 02, the H+s enter the thylakoid space from the stroma
Wiki User
∙ 12y ago
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What is the reaction that complex the part of a photosystem that donates excited electrons?
It is the Reaction Center Complex as I assume you are doing the Campbell Biology Chapter 7 Reading Review.
What compound is found at the reaction center of a photo system?
I believe they are chlorophyll a molecules (P680 in Photosystem II and P700 in Photosystem I) Btw, the P680 and P700 refer to wavelength size that these moecules absorb. Hope this helps.
During the dark reactions the reaction center splits water?
No, during the light reactions. Photolysis splits the water molecule at Photosystem II.
What is the color of phaeophytin?
Pheophytin or phaeophytin (abbreviated Pheo) is a chemical compound that serves as the firstelectron carrier intermediate in the electron transfer pathway of photosystem II (PS II) inplants, and the photosynthetic reaction center (RC P870) found in purple bacteria. In both PS II and RC P870, light drives electrons from the reaction center through pheophytin, which then passes the electrons to a quinone (QA) in RC P870 and RC P680. The overall mechanisms, roles, and purposes of the pheophytin molecules in the two transport chains are analogous to each other.
How water contributes to photosynthesis?
Water is one of the raw materials in photosynthesis. A shortage of water can slow or even stop photosynthesis. Water is split into hydrogen molecules and oxygen, while doing so, giving off an electron. This electron travels through the electron transport chain to create ATP so with out water this process cannot occur.
What does a phtosystem contain?
Photosystem is composed of pigments, reaction center and electron acceptor
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.
What happens after the reaction center receives energy from molecules in the light harvesting complex?
It passes the energy to the reaction center ( a specialized region of photosystem) then the energized electrons leave the reaction centers and are passed to adjacent electron transport chains (ETC)
What are photosystems made of?
In the thylakoid membrane a number of light-harvesting complexes and a reaction center complex. The chlorophyll a molecule at the reaction center of photosystem II is called P680. At the reaction center of photosystem I is a chlorophyll a molecule called P700.
What is the reaction that complex the part of a photosystem that donates excited electrons?
It is the Reaction Center Complex as I assume you are doing the Campbell Biology Chapter 7 Reading Review.
Do the energized electrons at the primary electron acceptor flow to the reaction center?
No, the electrons flow from the reaction center to the primary electron center. Just the opposite of what you said.
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 the path of electrons through the light-dependent reactions?
1. Photon of Light Absorbed by Photosystem II 2. Bounces around until it reaches the reaction center 3. Taken by electron transport chain. As it bounces from chain to chain, it loses small amounts of energy to make ATP. 4. Taken by Photosystem I. Hit by a Photon of Light 5. Bounces till reaction center 6. Moved to electron transport chain. 7. Accepted by NADP+
What is the role of photosystem 1 in the light reactions?
is a cluster of pigments, with a perticular chlorophyl in the center. The energy is absorbed and is then passed to the Hugh energy electrons, NADP will then pick up the electrons and make NADPH
What compound is found at the reaction center of a photo system?
I believe they are chlorophyll a molecules (P680 in Photosystem II and P700 in Photosystem I) Btw, the P680 and P700 refer to wavelength size that these moecules absorb. Hope this helps.
What is found at the center of a photosystem?
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During the dark reactions the reaction center splits water?
No, during the light reactions. Photolysis splits the water molecule at Photosystem II.
