The light reactions also produce __________ and __________. Sugars are made from CO2. Which of the following statements is a correct distinction between autotrophs and heterotrophs? Which set of reactions uses H2O and produces O2? b) they are the ultimate sources of organic compounds for all nonautotrophic. oxidative phosphorylation in cellular respiration. Both mitochondria and chloroplasts _____. The enzyme involved in catalyzing this reaction is known … Photosynthesis stores energy in complex organic molecules, whereas respiration releases it. 3. Calvin Cycle DRAFT. carbon dioxide and water. You have planted bean seedlings (C3) and corn seedlings (C4) in soil and sealed them in an aquarium. The Calvin cycle has three phases: carbon fixation, reduction, and regeneration of RuBP. noncyclic electron flow during the light reactions 9 The reactions of the Calvin cycle are not directly dependent on light, but they usually do not occur at night. Others call it the Calvin-Benson cycle to include the name of another scientist involved in its discovery (Figure 1). Brainscape is a web and mobile study platform that helps you learn things faster. fix CO2 into organic acids during the night. The second stage of photosynthesis is the Calvin cycle; this is when the carbon is fixed to form the sugar glucose. 444 times. Which of the following statements describes why this is the case? Illustration by Tim Gunther The energy used to produce ATP in the light reactions of photosynthesis comes from __________. In the light reactions of photosynthesis, ATP is produced by photophosphorylation. they can fix carbon at the lower CO2 concentrations that develop when the stomata are closed, CAM plants keep stomata closed in daytime, thus reducing loss of water. Plants respire, The light reactions of photosynthesis supply the Calvin cycle with. Which substance from the light-dependent reactions of photosynthesis is a source of energy for the light-independent reactions? During which process is molecular oxygen produced in photosynthesis? The regeneration of CO 2 occurs during the Calvin cycle, which is last or third phase in the cycle. The light reactions of photosynthesis use chemiosmosis to produce ATP that will be used in the Calvin cycle. Energized electrons from ____ enter an electron transport chain and are then used to reduce NADP+. 10th - 11th grade. B) The release of oxygen does not occur at any stage of the Calvin cycle. NADPH note: The NADPH produced by photosystem I is used to supply energy for the production of sugars during photosynthesis. C4 plants occur more commonly in desert conditions because _____. the synthesis of ATP the synthesis of ATP. Which of the following reactions ensures that the Calvin cycle can make a continuous supply of glucose? Calvin Cycle The Calvin cycle is a part of photosynthesis, the process plants and other autotrophs use to create nutrients from sunlight and carbon dioxide. The oxygen comes from __________. Which of the listed processes is most similar to photophosphorylation? The Calvin cycle, Calvin–Benson–Bassham (CBB) cycle, reductive pentose phosphate cycle (RPP cycle) or C3 cycle is a series of biochemical redox reactions that take place in the stroma of chloroplast in photosynthetic organisms.. … a) Glycolysis can occur with or without oxygen b) Glycolysis occurs in the mitochondria c) Glycolysis is the first step in both aerobic and anaerobic respiration d) Glycolysis produces 2 ATP, 2 NADH, and 2 pyruvate 3. In the second stage, six ATP and six NADPH are used to convert the six 3-PGA molecules into six molecules of a three-carbon sugar (G3P). Calvin Cycle. In this step, initial incorporation of three molecules CO2 … _____ releases energy that is used to pump hydrogen ions from the stroma into the thylakoid compartment. Which of the following metabolic processes can occur without a net influx of energy from some other process? a. Oxidative phosphorylation in cellular respiration 6. Calvin Cycle. This carbon dioxide then combines with the molecule ribulose known as ribulose 1,5-bisphosphate. Which process is most directly driven by light energy? The reactions of the Calvin cycle could be divided into three primary stages: the carbon fixation stage, the reduction stage, and the regeneration of the starting molecule. The second stage is the dark reaction phase, where water and carbon dioxide are converted into organic molecules. Which of the following products of the light reactions of photosynthesis is consumed during the Calvin cycle? Which of the following processes occurs during the second phase, the reduction phase, of the Calvin cycle? D) regeneration of the CO2 acceptor E) consumption of ATP Which of the following processes is most directly driven by light energy? Both mitochondria and chloroplasts __________. Light-dependent reactions harness energy from the sun to … 2. In the stroma, in addition to CO 2 , two other chemicals are present to initiate the Calvin cycle: an enzyme abbreviated RuBisCO, and the molecule ribulose bisphosphate (RuBP). In the electromagnetic spectrum, the type of radiation that we call visible light occurs between _____. The Calvin cycle occurs in the thylakoid membrane of chloroplasts. answer choices ... and use it to make organic compounds is a process … How the products of the light reactions, ATP and NADPH, are used to fix carbon into sugars in the second stage of photosynthesis. 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