What happens when an excited electron is passed through electron acceptors in the electron transport chain in a photosystem? The electron acceptor is oxidized Energy in sunlight is transformed to chemical energy It drops back down to its ground state, resulting in the phenomenon as fluorescence The chemical energy in the excited electron is released as heat The electron acceptor is transformed to a higher free energy state than the excited electron
Q: The diagram shows the process of photosynthesis and cellular respiration in relation to each other.…
A: Photosynthesis is the process utilized by green plants and photosynthetic bacteria, to convert light…
Q: Which of the following is true about how oxygen is formed during photosynthesis? Select one or…
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Q: In the light reactions of photosynthesis, an electron is taken from causing the formation of The…
A: Photosynthesis is the process that produces organic molecules from simple inorganic molecules from…
Q: The Calvin Cycle is part of O Glycolysis O Krebs Cycle O Electron Transport Chain Light Independent…
A: Photosynthesis, the cycle by which plants and certain various animals change light energy into…
Q: The transfer of electrons in a photosystem creates a membrane potential with a _______ concentration…
A: Photosynthesis is a process in which food material ( Glucose ) is synthesized by the addition of…
Q: Light reactions do all of the following except- O synthesize ATP and NADPH O absorb photons O…
A: Photosynthesis completes in two stages: light reactions and dark reactions, light reactions take…
Q: Of the following, which occurs during the Calvin cycle? O a. ATP and NADPH are synthesized O b. CO2…
A: The process of photosynthesis is a complicated oxidation- reduction process. In this process,…
Q: Which two products of the light-dependent reactions are used up in the Calvin cycle? Rubisco adds a…
A: Photosynthesis is a biochemical process occurring in the chloroplast of a plant cell that is…
Q: Which of the following events describes where the NADPH required for the Calvin cycle comes from?…
A: Introduction Plants and algae employ the Calvin cycle to convert carbon dioxide from the air into…
Q: The Krebs Cycle and Electron Transport Chain are part of • the Calvin Cycle which takes place during…
A: Cellular respiration has three phases: Glycolysis Krebs cycle Electron transport chain Both Krebs…
Q: Unlike photosynthesis, cellular respiration occurs in
A: Answer: All cells All the cells undergo cellular respiration unlike photosynthesis
Q: Which of the following is not required as a reactant by the Calvin cycle? CO2 ATP…
A: The correct option is given below.
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: Which of the following is NOT true of photosynthesis? Light-excited electrons in chlorophyll…
A: Photosynthesis occurs in two steps, light-dependent reaction and light-independent reaction. The…
Q: There are some similarities and some differences between the citric acid cycle in the mitochondrion…
A: The Calvin cycle is the chemical reaction undertaken by plants to “fix” carbon from CO2 from…
Q: Which of the following structures is not a component of a photosystem? a. ATP synthase b. antenna…
A: The thylakoid membrane in chloroplast consists of a multiprotein complex called photosystem (PS). It…
Q: Which of the following statements is not true about the Calvin Cycle? O It takes in carbon dioxide…
A: RuBP i.e ribulose bisphosphate is s five carbon sugar and it is act as CO2 acceptor. RuBP is…
Q: This Z diagram of the light dependent reaction shows how an electron moves from the reaction center…
A: The "Zscheme" describes the oxidation/reduction changes that occur during photosynthesis's light…
Q: Which of the following does not occur in photosynthesis?a. reduction of CO2b. oxidation of waterc.…
A: The plants need various substances for their purpose of growth. The plants make their own food with…
Q: The final electron acceptor for electrons for photosystem I is O NADP+ carbon dioxide chlorophyll in…
A: Photosynthesis is the process of synthesizing the food in presence of Sunlight, carbondioxide and…
Q: The main purpose of the light reactions in photosynthesis is Group of answer choices to take the…
A: Photosynthesis is a process occurs in photosynthetic organisms that use light energy to derive the…
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: ATP and NADPH are being used during the Calvin Cycle reactions. Select the statement that ex in the…
A: The Calvin cycle of photosynthesis are chemical reactions that convert Carbon dioxide and other…
Q: From your understanding of the Calvin cycle, which of the following statements would be correct when…
A: Answer :- * Two G3P molecules would be removed from the cycle. * 1 RuBP would be used. Only these…
Q: The high energy molecules that provide the energy to run the reactions of the Calvin cycle are…
A: The Calvin cycle is a series of light-independent chemical reactions that take place in the stroma…
Q: What process is shown in the figure below? 3 Molecules CO2 RuBisCO Stage 1: carbon fixation 3 ADP 6…
A: The given cycle shows three stages, Stage 1 carbon fixation Stage 2 reduction Stage 3 regeneration…
Q: Which of the following is found in both the light reactions of photosynthesis and cellular…
A: Light-dependent reactions occur on thylakoid membranes during photosynthesis. Cellular respiration…
Q: During oxygenic photosynthesis, what happens to the oxygen atoms that were originally present only…
A: Photosynthesis is a process of obtaining energy from the sunlight by the plants, algae and…
Q: Chemicals called uncouplers can make membranes permeable to small molecules and ions. What effect…
A: Chemical agents that uncouple oxidation from phosphorylation in the metabolic cycle so that ATP…
Q: Which of the following are involved in photosynthesis in plants and algae? chloroplasts CO2 water
A: Photosynthesis is an important method for inbound living organisms. students and researchers…
Q: Why does cyanide inhibit electron transport but not photosynthesis? O In animals cyanide binding to…
A: The electron transport chain is the last and most important step of cellular respiration as it…
Q: In photosynthesis, is an electron acceptor and is CO2; reduced Он0; охidized CO2; oxidized О н0;…
A: Photosynthesis is the process by which green plants and certain organisms convert light energy into…
Q: Which of the following statements about the challenges of C3 photosynthesis under hot conditions is…
A: C3 Cycle: It is a cyclic reaction that occurs during the dark phase of photosynthesis. This cycle…
Q: Which of the following correctly sequences the steps of non-cyclic electron transport? * Water is…
A: Plants cannot use light energy directly to make sugars, they change the light energy into a chemical…
Q: During light reactions of photosynthesis which of the following is false? NADPH is a product An H+…
A: Photosynthesis process is responsible for producing glucose from the carbon dioxide, water and…
Q: light energy light dependent reactions water ADP NADP PGA light PGAL independent RUBP reactions 4…
A: C. 1) is O2 and 2) is ATP+ NADPH.
Q: Which of the following processes during photosynthesis is incorrectly coupled to its typical…
A: During photosynthesis energy from sunlight is harvested and it is used to drive the synthesis of…
Q: Which of the following processes is ATP synthesized during the light-dependent reactions? O…
A: Photosynthesis process takes place in the plant cell. It is responsible for producing the glucose in…
Q: After electrons are raised to high energy levels in photosystem II, they travel down an electron…
A: During respiration, large number of energetic compound i.e, NADH + H+ and FADH synthesis in…
Q: Which of the following correctly sequences the steps of non-cyclic electron transport? a)…
A: Photophosphorylation is defined as the use of light energy from sunlight to give the energy to…
Q: Photosynthesis can be divided into two steps: the light-dependent reactions and the Calvin cycle.…
A: Answer of the question given below...
Q: In photosystem II proton coupled electron transfer reactions are thought to be necessary after which…
A: *The enzyme photosystem II catalyzes light driven oxidation of water in oxygenic photosynthesis.…
Q: The Calvin Cycle is also called A. the light independent reactions B. the light dependent…
A: The Calvin cycle is a series of chemical reactions that fix CO2 into 3 carbon sugars.
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: e most accurate explanation for lower rates of photosynthesis at high temperatures would be The…
A: Introduction: The correct choice is the first option.
Q: ATP formed during photosynthesis is considered _________________ phosphorylation. Substrate…
A: Phosphorylation is the biochemical process involving addition of phosphate to an organic compound…
Q: In a plant cell, which of the following reactions produces oxygen? Both the light reactions and the…
A: Several reaction take place In plants where some produce carbondioxide Or oxygen or some plants use…
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A: Introduction Photosynthesis Is The Conversion Of Light Energy Into Chemical Energy In Green Plants…
Q: The "high energy electrons" used in the electron transport chain (ETC) of cellular respiration come…
A:
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- The Relative Efficiency of ATP Synthesis in Noncyclic versus Cyclic Photophosphorylation If noncyclic photosynthetic electron transport leads to the translocation of 7 H+/2e- and cyclic photosynthetic electron transport leads to the translocation of 2 H+/e-, what is the relative photosynthetic efficiency of ATP synthesis (expressed as the number of photons absorbed per ATP synthesized) for noncyclic versus cyclic photophosphorylation? (Assume that the CF1CF0-ATP synthase yields 3 ATP/14 H+.)avelengths (Choose J |Choose | graph plotting a pigment's light absorption versus wavelength reaction- center complex is system consists of a reaction-center complex surrounded by nt-harvesting complexes absorption spectrum spectrophotometer molecule located in the reaction center accepts excited ctrons photosystem light harvesting complex reaction-center chlorophyll a of this photosystem iş called P680 ause it is best at absorbing a wavelength of 680 nm. primary electron acceptor wavelength PSI estion 4 PS II action spectrum >Put 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 chain
- In photosynthetic organisms that have two photosystems, a key reason to increase non-cyclic electron flow through photosystem complexes is to:Excited molecules can return to the ground state by severalmeans. Describe each briefly. Which of these processes areimportant in photosynthesis? Describe how they function ina living organism.What process is shown in the figure below? 3 Molecules CO2 RuBisCO Stage 1: carbon fixation 3 ADP 6 ATP ЗАТР 6 ADP Stage 3: regeneration of RUBP Stage 2: reduction 6 NADPH - 6 NADP*+ H* Sugar O Glycolysis O Light reactions of photosynthesis Oxidative phosphorylation Citric Acid Cycle O Dark reactions of photosynthesis
- 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 loopDiagram 4: The Light Reactions of Photosynthesis STROMA dow concentralion Photonystem B Cytch e Photosystem Light omplex Light NADP reductoe NADP NADPH THYLAKOID SPACE igh ooncentration) Cavin Cyle Thylakid menbrane ATP STROMA ow H eone sythase ADP ATP Diagram 4 shows a single thylakoid membrane taken from a chloroplast inside of a leaf cell. The events of the light dependent cycle that take place along the thylakoid membrane are shown. Light energy is captured by O ATP synthase O Photosystems I and II O NADP+ reductase The thylakoid membrane's lipid structures DroviousThe the chlorophyll in the Photosystems's reaction center is special, because when it's excited it: O Gives of heat. Moves the electron via resonent electron transfer. O Is oxidized O is Reduced
- Which of the following correctly sequences the steps of non-cyclic electron transport? * Water is oxidized by the capture of light energy; these excited electrons are passed through the dark reactions, returning to chlorophyll during the final light reactions The ATP and NADPH generated by the reactions of photosystem Il and photosystem I are utilized by the Calvin Cycle to build high energy glucose molecules Electrons donated from water molecules pass through photosystem I then O photosystem II before returning to the chlorophyll molecules, generating ATP in the process Chlorophyll molecules absorb UV radiation exciting electrons which flow through photosystem I, returning to the chlorophyll molecules ) This is a required questionThe figure shows the absorption spectrum for chlorophyll a and the action spectrum for photosynthesis. Why are they different? 400 500 600 700 Wavelength of light (nm) O Green and yellow wavelengths inhibit the absorption of red and blue wavelengths. O Oxygen given off during photosynthesis interferes with the absorption of light. O Other pigments absorb light in addition to chlorophyll a. Absorbance of chlorophyll a Violet Blue Green Yellow Orange Red - Rate of photosynthesisDaniel Arnon and coworkers carried out experiments with intact, salt- washed chloroplasts to study photophosphorylation. When the chloroplasts were illuminated in the presence of ADP +P, ATP was produced, but oxygen was not produced or nor consumed. ATP formation was not accom- panied by a measurable electron transport involving any external electron donor or acceptor. The overall reaction for this result is: ADP + P -", ATP When NADP+ was included in addition to the ADP + P, ilumination of the intact chloroplats again resulted in resulted in the photophosphorylation of ADP to ATP. In addition, the NADPpt was reduced to NADPH + H* and o, was produced. Moreover, the light-induced reduction of NADP* was greatly decreased if ADP + P; were ommitted. The equation for this reaction is: NADP* + H,0 + ADP + R -", NADPH + H + ATP + }02 Briefly describe the mechanism(s) of these two types of photophosphoryla- tion that explain all of these results.