Plastoquinone (PQ) in turn transfer its e– to Cyt b 6f complex. 2. There are other forms of plastoquinone, such as ones with shorter side chains like PQ-3 (which has 3 isoprenyl side units instead of 9) as well as analogs such as PQ-B, PQ-C, and PQ-D, … 19. Match the following columns and select the correct option. 16. In light reaction, plastoquinone facilitates the transfer of electrons from (1) PS-I to NADP+ (2) PS-I to ATP synthase (3) PS-II to Cytb 6 f complex (4) Cytb 6 f complex to PS-I Ans. -The electron from the plastoquinone (QA) is transferred to this molecule, which after it recieves a second electron in a like manner, takes up two protons at the stromal surface (cytoplasmic in cyanobacteria) of the thylakoid membrane. Plastoquinone (PQ) in turn transfer its e–to Cyt b 6f complex. 2. tential to extract electrons from water. 14. H 2 A + 2 photons (light) → 2 e− + 2 H + + A, where the chemical nature of the 'A' depends on the organism. molecules, protein-bound plastoquinone (PQ) as well as Mn, Ca, Cl and Fe, which act as redox cofactors of light-driven electron transfer (Ferreira et al. In LEF, electrons from PSII RCs are transferred sequentially along a set of electron carriers, initially reducing the plastoquinone (PQ)pool,thenthecyt b 6 fcomplex,andsubsequentlythe lumenal electron carrier plastocyanin (PC). 3. In light reaction, plastoquinone facilitates the transfer of electrons from : (1) PS-II to Cytb 6 f complex (2) Cytb 6 f complex to PS-I (3) PS-I to NADP + (4) PS-I to ATP synthase 15 . Therefore plastoquinone facilitates the transfer of electrons from PS-II to Cyt b 6 f complex. The sequence that controls the copy number of the linked DNA in the vector, is termed. D)Ori Site. The Questions and They are excited when occurring as a single entity. Column-I Column-II (a) Typhoid (i) Wuchereria (b) Pneumonia (ii) Plasmodium Plastoquinone (PQ) in turn transfer its e– to Cyt b 6f complex. This greatly facilitates the transfer of electrons from the split water molecule.) soon. 3)PS II to Cyt b6f complex. It is found in the cytochromes involved in oxidative phosphorylation and photophosphorylation. In light reaction,plastoquinone facilitates the transfer of electrons from : asked Sep 14, 2020 in Biology by Manoj01 (50.1k points) neet 2020 +1 vote. 52. C)Selectable marker. Two electrons are passed from two cytochrome c's, through the Cu A and cytochrome a sites to the cytochrome a 3 - Cu B binuclear center, reducing the metals to the Fe+2 +1form and Cu . Light energy absorbed by PSI excites a special pair of Chl molecules molecules, protein-bound plastoquinone (PQ) as well as Mn, Ca, Cl and Fe, which act as redox cofactors of light-driven electron transfer (Ferreira et al. View Answer. In light reaction, plastoquinone facilitates the transfer of electrons from (1) PS-I to NADP+ (2) PS-I to ATP synthase (3) PS-II to Cytb 6f complex (4) Cytb 6f complex to PS-I Answer (3) 2. 6. 1 answer. C)Selectable marker. View Answer. 1.In light reaction,plastoquinone facilitate the transfer of electrons from. 8. Oxidized P680 or Photosystem II primary donor (P680+) is the strongest biological oxidizing agent known. agree to the. Identify the wrong statement with reference to the gene T that controls ABO blood groups. In the process, energy is provided to produce a proton gradient across the membrane which can be used for the ADP to ATP conversion. Plastoquinone (PQ) in turn transfer its e – to Cyt b 6 f complex. 2)PS I to ATP synthase. 1. In light reaction, plastoquinone facilitates transfer of electrons from PS-II to C y t b 6 f complex. Can you explain this answer? Regarding to androecium of given families. 1)Palindrome sequence. In photosynthetic reaction centers from purple bacteria (PbRC) and the water-splitting enzyme, photosystem II (PSII), light-induced electron transfer occurs only in one of the two branches irrespective of the apparent symmetry in the structures. Therefore plastoquinone facilitates the transfer of electrons from PS-II to Cyt b 6f complex. 17. After excitement, e is passed from PS-11(P680) to primary electron acceptor (Pheophytin). 2)PS I to ATP synthase. Choose the correct pair from the following. If the answer is not available please wait for a while and a community member will probably answer this EduRev is a knowledge-sharing community that depends on everyone being able to pitch in when they know something. NADPHfunctions as a reducing agent similar to NADH produced in cellular resperation. When treated with certain detergents, lamellae can be broken down into smaller particles capable of carrying out single light reactions. 14 . Plastoquinone (PQ) in turn transfers its e to Cyt b, f complex. 1. agent known; its electron "hole" must be filled. If the mass flow rate of the exhaust gases! The pathway of electrons. 8. In photosynthesis, energy for … B)Recognition site. Electron excitation: The charged reaction centre releases the high energy electrons by exciting the electrons from a ground to a higher energy state. Therefore plastoquinone facilitates the transfer of electrons from PS-II to Cyt b 6f complex. In light reaction, plastoquinone facilitates the transfer of electrons from : (1) Cytb 6 f complex to PS-I (2) PS-I to NADP + (3) PS-I to ATP synthase (4) PS-II to Cytb 6 f complex 17. In light reaction, plastoquinone facilitates the transfer of electrons from: ... Plastoquinone. Match the following columns and select the correct option. In light reaction, PQ facilitates the transfer of electrons from PS-II to Cytb6f complex, which then reduces plastocyanin. 18. 13 . The above data suggest that apoptosis of guard cells is initiated upon a combined action of two factors, i.e., ROS and reduced plastoquinone of the photosynthetic electron transfer chain. 2005). In the low-barrier H-bond between D1-His215 and plastoquinone Q B, located at the terminus of the electron transfer pathway, the driving force of electron transfer and electronic coupling between Q A and Q B are maximized when the proton arrives at Q B. The infectious stage of Plasmodium that enters the human body i s, identify the substances having glycosidic bond and peptide bond, respectively in their structure. 2004, Loll et al. The hydroxide ligand is protonated and lost as water, creating a void between the metals that is filled by O 2. A second electron carrier plastoquinone (Pq) carries the electrons to a complex of two cytochromes. The plant parts which consist of two generations - one within the other: Who found starch to be reserve product of photoysynthesis, Hydrogen acceptors ferricyanide , chromate, benzoquinone and dichlorophenol indophenol were employed as oxidants by, Light harvesting complex is pigment containing, Substrate for photorespiration which passes into peroxisome is. For the purposes of discussion, the chlorophylls, the plastoquinone electron acceptors, and … (1) These represent reserve material in cytoplasm. Identify the wrong statement with reference to the gene T that controls ABO blood groups. 1.In light reaction,plastoquinone facilitate the transfer of electrons from. Which of the following is not an attribute of a population ? Match the following diseases with the causative organism and select the correct option. You can study other questions, MCQs, videos and tests for NEET on EduRev and even discuss your questions like Therefore plastoquinone facilitates the transfer of electrons from PS-II to Cyt b 6f complex. PQ accepts electrons from PSII and the electrons are then transferred to PSI via Cyt b 6 f and PC. Light energy absorbed by PSI excites a special pair of Chl molecules In addition to PSI and PSII, LEF requires the cytochrome b6f complex (Cyt b6f) and the mobile electron carriers plastoquinone (PQ), plastocyanin (Pc), and ferredoxin (Fd). Iron is also plays a role in synthesizing chlorophyll. are products of reaction catalyzed by Nitrogenase enzyme in root nodules of leguminous plants like fenugreek. Identify the incorrect statement. In gel electrophoresis, separated DNA fragments can be visualized with the help of (1) Ethidium bromide in UV radiation (2) Acetocarmine in UV radiation electrons, the loss of electrons does not necessarily result in the development of electrical charge because of the release of protons that accompany at least for three of the four transitions (see below). Match the following columns and select the correct option. 1 15. plastoquinone. Therefore plastoquinone facilitates the transfer of electrons from PS-II to Cyt b 6f complex. 2005). UMass Boston. The electrons are returned by plastocyanin (Pc) to the P700 pigment in the reaction center to complete the cycle. The hydroxide ligand is protonated and lost as water, creating a void between the metals that is filled by O 2. Electrons from respiratory substrates enter the electron transport chain via plastoquinone reduction by NDH-1 or SDH and are passed on through the cyt b 6 f complex and plastocyanin or cyt c. They then have two possible fates: they could be transferred to a terminal oxidase or they could be transferred to PSI ( 3 ). MEDIUM neet. These small proteins donate electrons to P700 +, the oxidized primary electron donor of PSI. In light reaction, plastoquinone facilitates the transfer of electrons from (1) PS-I to NADP + (2) PS-I to ATP synthase (3) PS-II to Cytb 6 f complex (4) Cytb 6 f complex to PS-I Answer (3) Sol. Plastoquinone acts as the electron carrier, transferring its two electrons to high- and low-potential electron transport chains (ETC) via a mechanism called electron bifurcation. Match the following columns and select the correct option Column-I Column-II a) Pituitary gland i) Grave’s disease b) Thyroid gland ii) Diabetes mellitus PGR5 encodes a novel thylakoid membrane protein that is involved in the transfer of electrons from ferredoxin to plastoquinone. School. It is now known that DCMU blocks the transfer of electrons between the first quinone and the plastoquinone pool in light reaction II. 2004, Loll et al. Published on 25 Mar 2018. Answers of In light reaction, plastoquinone facilitates the transfer of electrons from:a)PS-I to NADP+b)PS-I to ATP synthasec)PS-II to Cytb6f complexd)Cytb6complex to PS-ICorrect answer is option 'C'. Process in bacteria and mitochondria in which ATP formation is driven by the transfer of electrons from food molecules to molecular oxygen. Plastocyanin? With the help of enzymes and solar energy, water is split (photolysis) into electrons, protons (H+), and oxygen. over here on EduRev! Molybdenum is a component of a few enzymes in plants, including one that helps plants use nitrate. A series of discovery and experiments led to the understanding of photosynthesis process. 2. From primary e – acceptor, e – is passed to plastoquinone. 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