Separate each item into one of the three categories, Photosystem II (PS II) only, Photosystem I (PS I) only, or both PS II and PS I.Reduction of NADP+Reduction of primary electron acceptorOxidation of waterLight absorbtionReduction of electron transport chain between the two photosystemsOxidation of electron transport chain between the two photosystems
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Input: ATP, NADPH, CO2Output: ADP, NADP+, G3PNot input or output: light, glucose, O2In the Calvin cycle, the energy outputs from the light reactions (ATP and NADPH) are used to power the conversion of CO2 into the sugar G3P. As ATP and NADPH are used, they produce ADP and NADP+, respectively, which are returned to the light reactions so that more ATP and NADPH can be formed.
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The rate of O2 production would decrease because the rate of ADP and NADP+ production by the Calvin cycle would decrease.
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a) stroma-the dense fluid surrounded between the inner envelope membrane and the thylakoid membranesb) thylakoid membrane-the third membrane system; surrounds the thylakoid; chrorophyll resides in the thylakoid membranec)cytosol- the fluid portion of cytoplasm surrounding (outside) the chloroplastd) location of Calvin Cycle-the calvin cycle occurs in the stromae) thylakoid space-the space within the thylakoid sacsf)location of light reactions-the light reactions occur in the thylakoids of the chloroplastg) envelope membranes-the inner and outer membranes of the chloroplast The chloroplast is enclosed by a pair of envelope membranes (inner and outer) that separate the interior of the chloroplast from the surrounding cytosol of the cell. Inside the chloroplast, the chlorophyll-containing thylakoid membranes are the site of the light reactions.Between the inner envelope membrane and the thylakoid membranes is the aqueous stroma, which is the location of the reactions of the Calvin cycle. Inside the thylakoid membranes is the thylakoid space, where protons accumulate during ATP synthesis in the light reactions.
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1. Photosystem I2. Both Photosystem I and Photosystem 23. Photosystem 24. Both Photosystem I and Photosystem 25. Photosystem 26. Photosystem 1
Q.2.
Sentences summarizing the redox reactions of photosynthesis: The electrons derived from the oxidation reaction in the light reactions are used to reduce _______ to ________
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NADPH......NADP+
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H2O...........O2
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NADP+.......NADPH
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CO2.........G3P
Q.3.
Sentences summarizing the redox reactions of photosynthesis: In the light reactions, light energy is used to oxidize _____ to _______
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NADP+.......NADPH
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NADPH......NADP+
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H2O...........O2
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CO2.........G3P
Q.4.
Sentences summarizing the redox reactions of photosynthesis: The Calvin cycle oxidizes the light reactions product _____ to ______
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H2O...........O2
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NADPH......NADP+
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NADP+.......NADPH
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CO2.........G3P
Q.5.
Inputs and outputs of the Calvin cycleFrom the following choices, identify those that are the inputs and outputs of the Calvin cycle.Drag each item to the appropriate bin. If the item is not an input to or an output from the Calvin cycle, drag it to the "not input or output" bin.Choose between light, glucose, CO2, NADPH, G3P, NADP+, O2, ADP, and ATP
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1. Photosystem I2. Both Photosystem I and Photosystem 23. Photosystem 24. Both Photosystem I and Photosystem 25. Photosystem 26. Photosystem 1
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The rate of O2 production would decrease because the rate of ADP and NADP+ production by the Calvin cycle would decrease.
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Input: ATP, NADPH, CO2Output: ADP, NADP+, G3PNot input or output: light, glucose, O2In the Calvin cycle, the energy outputs from the light reactions (ATP and NADPH) are used to power the conversion of CO2 into the sugar G3P. As ATP and NADPH are used, they produce ADP and NADP+, respectively, which are returned to the light reactions so that more ATP and NADPH can be formed.
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Input: Light, water, NADP+, and ADPOutput: O2 ATP, and NADPHNeither Input or Output: CO2, glucose, and G3PIn the light reactions, the energy of sunlight is used to oxidize water (the electron donor) to O2 and pass these electrons to NADP+, producing NADPH. Some light energy is used to convert ADP to ATP. The NADPH and ATP produced are subsequently used to power the sugar-producing Calvin cycle.
Q.6.
Sentences summarizing the redox reactions of photosynthesis: The electrons derived from this oxidation reaction in the Calvin cycle are used to reduce ______ to _____
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NADP+.......NADPH
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NADPH......NADP+
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H2O...........O2
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CO2.........G3P
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