Which of the following statements is FALSE about photosystem Il? generates NADPH generates protons, setting up a proton concentration gradient generates electrons that are passed to P680 chlorophylls uses water as the initial electron donor and generates oxygen
Q: Put the events in correct order: + A photon of light excites a pigment molecule in photosystem I…
A: Photosynthesis is a phenomenon by which green living plants make their food (starch)in the presence…
Q: When there is light, plants release oxygen. What else may plants also use oxygen in? photosynthesis…
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Q: The overall flow of electrons in the light reactions is from a. antenna pigments to the reaction…
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Q: Put the steps of photosynthesis in order 1. NADPH is oxidized 2. Photosystem
A: 1. Absorption of light-first step in photosynthesis is the absorption of light by chlorophylls that…
Q: Which of the following does NOT occur in the Calvin cycle? Select one: O Oxidation of NADPH. O…
A: The Calvin cycle is also known as the carbon fixation cycle by which oxygenic photosynthetic…
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Q: Match each term on the left with the best example on the right E photosystems NADP+ E G3P molecule…
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Q: Diagram 4: The Light Reactions of Photosynthesis STROMA (low H concentration) Cytochrome complex…
A: Thylakoids are those membrane bound compartments which are present inside the chloroplasts and…
Q: There are three major resources (and several others in smaller quantities) that are
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A: Proton gradient is formed in the electron transport chain that occurs in the two photosystems of…
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: The light-dependent reactions of photosynthesis generate ________ and ________ to carry solar…
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Q: Which of the following statements is FALSE for photosynthesis? Select one: O a. Carbon dioxide is…
A: An autotroph is an organism that synthesizes complex organic compounds such as carbohydrates,…
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A: Photosynthesis is the process of synthesizing the food in presence of Sunlight, carbondioxide and…
Q: Photosystems are essential to the light reactions. Which of the following is true about…
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Q: Which of the following statements is NOT true of photosynthesis
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Q: Which stage of the light-dependent reactions of photosynthesis is linked to photosystem I? ATP…
A: Photosynthesis is a process in which the photosynthetic organisms like plants and some bacteria use…
Q: Which of the following statements about the light reactions of photosynthesis are correct? 1.…
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Q: Which of the following scenarios happens during the light-dependent reaction of photosynthesis?…
A: light dependent reaction in photosynthesis conversion the energy of the sunlight into the chemical…
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Q: Which of the following are involved in photosynthesis in plants and algae? chloroplasts CO2 water
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Q: Protons are produced when NADP+ is reduced A proton pump uses light energy to move protons into the…
A: Light reaction of photosynthesis comprises of two photosystem photosystem 1 and photosystem 2. Both…
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A: Photosynthesis process is responsible for producing glucose from the carbon dioxide, water and…
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A: Photosystem II is the first protein complex in the light dependent reactions of oxygenic…
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A: Photosynthesis is the process by which chlorophyll containing organisms produce simple organic…
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Q: The light independent reactions of photosynthesis occur in/on the... thylakoids O grana inner…
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A: All photosynthetic organisms collect solar energy with the help of light-absorbing pigments present…
Q: Energized electrons from the second photosystem pass down an electron transport chain to the second…
A: The production of food (sugars) and oxygen is accomplished by the process of photosynthesis, which…
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Q: Put the events in correct order: + A photon of light excites a pigment molecule in photosystem I +…
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Q: Choose the CORRECT order of reactions that are conducted by photosystem I. P700 is activated by two…
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Q: The light-dependent reactions of photosynthesis generate ________ and ________ to carry solar…
A: Question - The light-dependent reactions of photosynthesis generate ________ and ________ to carry…
Q: In oxygenic photophosphorylation (a) photosystem II uses the photopigment bacteriochlorophyll (b)…
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- Figure 8.18 Which of the following statements is true? In photosynthesis, oxygen, carbon dioxide, ATP, and NADPH are reactants. G3P and water are products. In photosynthesis, chlorophyll, water, and carbon dioxide are reactants. G3P and oxygen are products. In photosynthesis, water, carbon dioxide, ATP, and NADPH are reactants. RuBP and oxygen are products. In photosynthesis, water and carbon dioxide are reactants. G3P and oxygen are products.Photosynthesis directly opposes respiration in determining how plants influence atmospheric CO2 concentrations. When a leaf is in the light, both photosynthesis and respiration are occurring simultaneously. The data in the Table were collected from the leaf of a sagebrush plant that was enclosed in a chamber that measures the rate of CO2 exchange. The same leaf was used to collect the data in Interpret the Data in Chapter 7. Respiration is shown as a negative and photosynthesis as a positive rate of CO2 exchange. The net photosynthesis rate is the amount of CO2 (in micromoles per square meter per second) assimilated by the leaf while respiration is occurring; a positive value indicates more photosynthesis is occurring than respiration. The light exposed to the leaf is quantified as the number of photons in the 400 to 700 nm wavelength, the photosynthetic photon flux density (PPFD); 2,000 mol/m2/s is equivalent to the amount of light occurring at midday in full Sun. Observation Photosynthetic Photon Flux Density (PPFD) (mol/m2/s) Net Photosynthesis (mol/m2/s) 1 2,000 9.1 2 1,500 8.4 3 1,250 8.2 4 1,000 7.4 5 750 6.3 6 500 4.8 7 250 2.2 8 0 -2.0 Why is net photosynthesis negative when PPFD is zero? Looking at the respiration data from Interpret the Data in Chapter 7, at what temperature do you think these data were collected? Source: Data based on unpublished research by Brent Ewers, University of Wyoming.Which of the following substances does not participate in the Calvin-Benson cycle? a. ATP c. NADPH e. PGAL b. O2 d. RuBP f. CO2
- Which of the following statements is FALSE? Water is the ultimate electron donor. Photosystem II has chlorophylls in its reaction center that has maximum light absorption at 680 nm. Plastoquinone has a higher reduction potential than plastocyanin. Proton gradient is created in the light phase of photosynthesis wherein the pH in the stroma is higher than in the lumen.Which of the following statements about the light reactions of photosynthesis is NOT true? Chlorophyll and other pigments absorb light energy, which excites electrons ATP is generated by photophosphorylation Electrons from water are given to the chlorophyll molecules of Photosystem! The splitting of water molecules provides a source of electronsWhich 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
- Place the following steps of the Light-Reactions of Photosynthesis in order. Production of NADPH Absorption of light Electron transport chain & Production of ATP Photosystem II Photosystem IWhich of the following defines photorespiration? The metabolic pathway by which most autotrophs use the energy of light to make sugars from carbon dioxide and water The light-independent reactions of photosynthesis Process by which electron flow through electron transfer chains sets up a hydrogen ion gradient that drives ATP formation An inefficient metabolic pathway of producing sugars that occurs when O2 attaches to rubiscoWhich of the following reactions produces the oxygen released by photosynthesis? chemiosmosis reduction of NADP+ splitting of water molecules electron transfer in photosystem I
- Which of the following correctly sequences the steps of non-cyclic electron transport? a) Chlorophyll molecules absorb UV radiation exciting electrons which flow through photosystem I, returning to the chlorophyll molecules b) Electrons donated from water molecules pass through photosystem I then photosystem II before returning to the chlorophyll molecules, generating ATP in the process c) 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 d) The ATP and NADPH generated by the reactions of photosystem II and photosystem I are utilized by the Calvin Cycle to build high energy glucose moleculesWhich of the following scenarios happens during the light-dependent reaction of photosynthesis? Oxygen gas is produced in the thylakoid lumen by the oxidation of water by photosystem I. Ferrodoxin and NADP+ reductase participates in the reduction of NADP+ to NADPH. Carbon dioxide enters the plants via stomata. Rubisco attaches three molecules of ribulose bisphosphate (RuBP) to one molecule of carbon dioxide.Diagram 4: The Light Reactions of Photosynthesis STROMA (low H* concentration) Cytochrome complex Photosystem I Photosystem I Light NADP reductase 4H NADP + H NADPH THYLAKOID SPACE (high H* concentration) 4 H* Thylakoid membrane ATP synthase STROMA (low H concentration) ADP Diagram 4 shows a single thylakoid membrane taken from a chloroplast inside of a the light dependent cycle that take place along the thylakoid membrane In the Thylakoid space water is split into O 02 H* and electrons O H*, ATP and O2 O Photosystem II, electrons and oxygen O 02 and chlorophyll