Which of the following descriptions about photosystems during linear electron flow is not correct? Select one:
Q: Atrazine is one of the world’s most used herbicides. It functions by bonding to and disabling a…
A: Atrazine is an herbicide which functions by bonding to and disabling D1 protein in photosystem II.…
Q: The overall process of photosynthesis a. results in the reduction of CO2 and the oxidation of H2O.…
A: Plants are multicellular and mostly green colored organisms belonging to kingdom Plantae. They…
Q: During photosynthesis, an electron transport chain is used to O a. transport electrons from the…
A: It is helpful to partition the photosynthetic interaction in plants into four phases, each happening…
Q: The elctrons lost from the reaction center photosytem 1 are replaced by electrons from? A)…
A: Light reactions or photochemical phase include light absorption, water splitting, oxygen release and…
Q: A. The carbon used in the Calvin cycle starts off as a molecule of B. The energy necessary to remove…
A: Calvin cycle takes place in chloroplasts during photosynthesis. It is light independent reaction.
Q: The excited electron from photosystem I a. can be returned to the reaction center to generate ATP…
A: The process of generating energy by the plants in the presence of sunlight utilizing carbon dioxide…
Q: Which of the following is specific for the light reactions of photosynthesis, but not the…
A: Photosynthesis is an intracellular anabolic process in which glucose molecules are synthesized using…
Q: Photosynthesis A. is the only energy-generating pathway for plants, cyanobacteria, and algae. B.…
A: Photosynthesis is a process that plants and other organisms use to convert light energy into…
Q: The light dependent reactions of photosynthesis are characterized by A. oxidation of carbon…
A: Photosynthesis is the process in which carbon dioxide and water combine in the presence of…
Q: Under certain conditions, the thylakoid membrane of the chloroplast may become 'leaky’ allowing ions…
A: If the thylakoid membrane is made leaky, the electrochemical proton gradient would be disrupted. In…
Q: A. Explain the role of ATP in life process. B. Complete the following table by comparing and…
A: In this Particular question we have to discuss about high energy molecule which is known as ATP(…
Q: Photorespiration is avoided in C4 plants becausea. these plants separate the formation of a…
A: Introduction Rubisco stands for Ribulose 1,5- Bisphosphate Carboxylase/Oxygenase. It has dual…
Q: The end product(s) of the light independent reactions (Calvin cycle) of photosynthesis is…
A: The calvin cycle is a series of biochemical reactions which reduce CO2 to three-carbon sugar. The…
Q: In cyclic photophosphorylation, how are the reaction center electrons replaced? A) An electron is…
A: The phosphorylation of ADP to ATP using the sunlight as source of energy is called…
Q: How does the electron transfer pathway from photosynthesis II to photosynthesis I in the…
A: Photosynthesis can be split into two types of reactions: light dependent reaction and light…
Q: Using the graph comparing photosynthetic rate and absorption of different wavelengths of light, what…
A: Cholorophyll is the green pigment in plants that absorbs light of specific wavelength and reflect…
Q: Compare the light reaction with the calvin cycle of phosynthesis in plants,which of the following…
A: The light reaction is the first stage of the photosynthesis process, in which solar energy is…
Q: If an enzyme in the Calvin cycle were knocked out, then a the light-dependent reactions would…
A: Photosynthesis is the procedure which has light-dependent and independent reactions. Calvin cycle is…
Q: reactions of photosynthesis generate NADPH and ATP to carry solar energy
A:
Q: From a plant's perspective, the main purpose of photosynthesis is to Group of answer choices a)to…
A: Plants have an autotrophic mode of nutrition as they prepare their own food. Hence, known as…
Q: How is photosynthesis similar in C4 plants and CAM plants?(A) In both cases, only photosystem I is…
A: Both the C4 and CAM plants exhibit an alternative mode of photosynthesis where the carbon fixation…
Q: You performed an experiment on photosynthesis on Elodea, using bromothymol blue as an indicator for…
A: Photosynthesis is a necessary process for all plants to live. Plants create sugars (which are stored…
Q: The Calvin cycle, the "dark reaction" or Carbon fixation reactions of photosynthesis, cannot occur…
A: The Calvin cycle, the "dark reaction" or Carbon fixation reactions of photosynthesis, cannot occur…
Q: Both the light reactions and light-independent reactions of photosynthesis… Select one: a. None of…
A: Plants make their own food through the process known as photosynthesis. Photosynthesis process…
Q: Cooperation of the two photosystems is required for (a) ATP synthesis (b) reduction of NADP+…
A: Photosystems are basic functional and structural units of protein which help to carry primary…
Q: The C4 plant performs photosynthesis more efficiently than the C3 when the CO2 concentration is…
A: The C4 photosynthesis is an adaptation of the C3 pathway that overcomes the limitation of the…
Q: Compare the light reaction with the calvin cycle of phosynthesis in plants,which of the following…
A: Light-dependent reactions capture the energy of light and use it to make the energy-storage and…
Q: Indicate if each description corresponds to photosystem I only, photosystem II only, or both…
A:
Q: The role of photosystem 1 and photosystem 2 in the process of photosynthesis is to a. absorb…
A: Answer B is correct : Absorb sunlight and transfer the energy to elctrons.
Q: How do the following features improve the effiency of photosynthesis? A. the presence of accessory…
A: The mechanism through which green plants and algae receive their nutrition is known as…
Q: Photosynthesis- ATP SYNTHESIS via ATP SYNTHASE: a) Location in chloroplast: b) Input:…
A: Hello. Since your question has multiple sub-parts, we will solve the first three sub-parts for you.…
Q: what is the fundamental reason for the drop of photosynthetic rate at noon? a. Photosynthetic…
A: Photosynthesis is an anabolic process by which green plants and other phototrophs synthesize…
Q: Which of the following questions is most relevant to understanding the Calvin cycle? A How does…
A: Photosynthesis is a reaction or process that takes place in two-phases. The former-reaction is…
Q: Which of the following steps is responsible for oxygen gas production in photosynthesis? Excitation…
A: Here more than one answer is correct . We know that photosythesis is important due to two…
Q: The C4 photosynthetic pathway A. Is always more efficient than any other type of photosynthesis B.…
A: Photosynthesis is a process used by plants to convert light energy into chemical energy. The…
Q: Choose the one answer that fits best. Which of the following statements about photosynthesis is NOT…
A: Photosynthesis is the process of transformation of light energy into chemical energy in plants and…
Q: Typically the CO2 necessary for photosynthesis enters through the stomata of the plant leaves…
A: Photosynthesis: plants use Carbon dioxide, sunlight and water to synthesize their food. Phases of…
Q: Which of the following approaches would be the best way to detect the lack of photosystem II in some…
A: Determine whether they produce O2 in the light.
Q: Look at the given figure which shows the effect of light on the rate of photosynthesis. Based on the…
A: Photosynthesis is a biological process that occurs in green plants in presence of sunlight. Through…
Q: a. Photosynthesis is the food-making process done by plants. b The Calvin cycle was called the dark…
A: a. Photosynthesis is the process by which plants use sunlight , water, and carbon dioxide to create…
Q: Which of the following descriptions about photorespiration is not correct? Select one: a. Rubisco…
A: a respiratory process in many higher plants by which they take up oxygen in the light and give out…
Q: The investigator suggested that insufficient amounts of carbon dioxide in the water may have been…
A: Photosynthesis is the process of the transformation of light energy into chemical energy by green…
Q: What is the difference between the cyclic and noncyclic pathways of photosynthesis? a The cyclic…
A: Photosynthesis is an oxidation-reduction process wherein the water oxidation is coupled with oxygen…
Q: Choose the CORRECT order of reactions that are conducted by photosystem I. P700 is activated by two…
A: Introduction Plants and other living things employ a process called photosynthesis to transform…
Q: Which of the following statements is TRUE? Select one: a. The immediate product of the light…
A: The initial step in photosynthesis is the trapping of light energy that is transferred to P680 from…
Q: Photosystems are essential to the light reactions. Which of the following is true about…
A: Photosynthesis is a reaction in which light energy is transduced into the chemical energy of food by…
Q: In chloroplasts, the light reactions power the creation of ATP via chemiosmosis. In relation to this…
A: The electrons from the initial light reaction reach Photosystem I, then are raised to a higher…
Which of the following descriptions about photosystems during linear electron flow is not correct?
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- The Overall Free Energy Change for Photosynthetic NADP+ Reduction What is the overall free energy change (G) for noncyclic photosynthetic electron transport? 4 (700-nm photons) + 4 (680-nm photons) + 2 H2O + 2 NADP+O2 + 2 NADPH + 2H+Choose the CORRECT order of reactions that are conducted by photosystem I. P700 is activated by two photons → two Chl A0 accept two high-energy electrons → one quinone A1 is fully reduced → two electrons are passed on one 4Fe–4S cluster → two molecules of ferredoxin are reduced → ferredoxin–NADP+ reductase takes two protons from the stroma and reduces one NADP+ P680 is activated by two photons → two Chl A0 accept two high-energy electrons → two molecules of ferredoxin are reduced → ferredoxin–NADP+ reductase oxidizes one ferredoxin at a time to reduce FAD to FADH- and then to FADH2 → the proton-motive force is created P700 is activated by a photon → Chl A0 accepts two high-energy electrons → one plastoquinone QA is fully reduced → two electrons are passed on one 4Fe–4S cluster → two molecules of ferredoxin are reduced → ferredoxin–NADP+ reductase takes two protons from the stroma and reduces one FAD P700 is activated by a photon → pheophytin accepts two high-energy electrons →…Which of the following statements about the light reactions of photosynthesis are correct? 1. Absorption of light does one thing: it makes chlorophyll easier to oxidize. 2. In PSII, the rate of damage to the D1 protein can never exceeds the rate of repair. 3. Electron transport is spontaneous (exergonic) as electrons move from P680* to P700+. 4. Compared to anoxygenic photosynthesis, in oxygenic photosynthesis less light needs to be absorbed to reduce NADP+. A. 1,2 and 3 B. 1 and 3 C. 2 and 4 D. 4 only E. All of 1,2,3 and 4 are correct
- Identify the chemical basis for ApH and AY across the chloroplast thylakoid membrane by dragging the descriptions to their targets. Be sure to notice that the upper arrow iindicates ApH and the lower arrow indicates ΔΨ. ATP synthase complex H+ N ADP + P₁ Light energy ATP H*N Photosystem I/II- Chloroplast N side Aus PN ApH T + Thylakoid membrane HTp H+p Lumen Stroma P side Proton circuit A B High H concentration Low positive charge High positive charge Low H+ concentration Within the image, identify the types of proton translocation by dragging each label to its target. O XH₂ 2H+ + Z 2 H* ZH₂ O XH₂ Z 2H+ ZH₂ 2H+ C A B Proton pump Redox loopWhich of the following processes during photosynthesis is incorrectly coupled to its typical location? Select one: a. Rubisco catalyzes carbon fixation—stroma b. ATP is produced via ATP synthase—thylakoid lumen c. NADPH is oxidized to NADP+—stroma d. Oxygen gas is produced by splitting of water—thylakoid lumen e. Activated P680 donates an electron to the primary electron acceptor—thylakoid membranesMark ALL that are true for cyclic photophosphorylation. Select one or more: a. Requires Photosystem II but not Photosystem I. b. Electrons are recycled back to the original photosystem, and therefore water is not required as an electron donor. c. Generates O2 and ATP, but not NADPH. d. Enables electrons to bypass the electron transport chain between the two photosystems. e. It is coupled to proton transport into the stroma.
- In the light-dependent reaction of photosynthesis, what specifically happens in the electron transport chain between Photosystem II and Photosystem I? The excited electron accepted by the primary acceptor in Photosystem II is transferred to pheophytin and plastoquinones, then to cytochrome complex, and finally to plastocyanin. Plastocyanin then transfers the electron to the P700 in the reaction center complex of Photosystem I. The excited electron accepted by the primary acceptor in Photosystem I is transferred to pheophytin and plastoquinones, then to cytochrome complex, and finally to plastocyanin. Plastocyanin then transfers the electron to the P700 in the reaction center complex of Photosystem II. The excited electron accepted by the primary acceptor in Photosystem I is transferred to plastocyanin, then to cytochrome complex, and finally to pheophytin and plastoquinones. Plastoquinone then transfers the electron to the P700 in the reaction center complex of Photosystem II.…The light reactions in chloroplasts power the creation of ATP via chemiosmosis. In relation to this process, which of the following is true? 1. ATP synthase breaks ATP down into ADP, creating energy to fuel chemiosmosis.2. Oxygen is used as a source of electrons to replace those lost in photosystem II.3. Chemiosmosis during the light reactions is also used in the reduction of NADPH and FADH2.4. As excited electrons fall back down to a lower energy state, they create a proton gradient that is used to fuel the phosphorylation of ADP.For most plants, two distinct photosystems (Photosystem I and Photosystem II) work together in series during photosynthesis. These photosystems are complexes of proteins and pigment molecules. Statement 1: Photosystem I has an absorption maximum of 680 nm, whereas Photosystem II has an absorption maximum of 700 nm. Statement 2: The special pair of chlorophyll a molecules in the reaction center of photosystem I is designated as P700, whereas the special pair of chlorophyll a molecules in the reaction center of photosystem II is designated as P680. Statement 1 is true. Statement 2 is false. Statement 1 is false. Statement 2 is true. Both statements are true. Both statements are false.
- Which of the following occurs ONLY in photosystem I and NOT in photosystem II? a. The energy of exited electrons is passed from one chlorophyll molecule to the next through resonance transfer b. Light energy is harvested by chlorophyll molecules c. A water molecule is split to provide electrons to a special chlorophyll A pair d. Energy harvested in the light-harvesting complexes excites electrons that can be used directly to reduce NADP+ to NADPH e. High-energy electrons are donated to an electron transport chainPut the events in correct order: + A photon of light excites a pigment molecule in photosystem I + Excitation is transferred to the photosystem Il reaction center chlorophyll * The photosystem Il electron is replaced by splitting of water + Excitation is transferred to the photosystem I reaction center chlorophyll + An electron is donated to NADP+ + A photon of light excites a pigment molecule in photosystem II + The photosystem II reaction center chlorophyll donates an electron to photosystem I via an electron transport chainChoose all that apply: The final electron acceptor(s) associated with photosystem II is/are: NADP+ 02 Photosystem I ATP
