front 1 The pigment responsible for the red-yellow coloration seen in leaves during the color change in autumn is | back 1 carotenoid Carotenoids reflect red-yellow light |
front 2 Which portion of the photosynthetic apparatus absorbs light | back 2 both photosystem I and photosystem II Functions of both photosystems I and II |
front 3 Plants require a lot of water for transpiration, metabolism, and photosynthesis. How is water used in photosynthesis? | back 3 As an electron donor Role of water in photosynthesis |
front 4 Which of the following represents a reactant in the light reaction of photosynthesis | back 4 H2O Reactants for light reaction |
front 5 Blue light has ___ energy than red light and is ____ by a green leaf. | back 5 more, absorbed Blue light has more energy than red light |
front 6 The molecules that directly convert NADP+ to NADPH is/are | back 6 NADP reductase Function of NADP reductase |
front 7 The main structure for gas exchange in plants is called the | back 7 stomata Function of stomata |
front 8 The purpose of the light reaction is to produce ____. | back 8 ATP and NADPH The light reaction produces ATP and NADPH |
front 9 In the reaction, 6CO2 + 6H2O →C6H12O6 + 6O2, which side should energy be placed on? | back 9 The left side, this is an endergonic reaction Photosynthesis equation |
front 10 The rate of photosynthesis is much greater in green light than red light | back 10 False Colors used for photosynthesis |
front 11 When NADPH _____ electrons in the Calvin cycle it is ______, forming NADP+ | back 11 donates, oxidized Oxidation of NADPH in Calvin cycle |
front 12 Harnessing light and splitting water occurs in both photosystem I and II. | back 12 False Splitting water with energy from light |
front 13 Where does the Calvin cycle occur? | back 13 chloroplast stroma Location of Calvin cycle |
front 14 A C4 plant minimizes photorespiration by | back 14 having the light reactions and carbon reactions occur in different cells, so carbon dioxide does not come into contact with rubisco. Isolating O2 reduces photorespiration in C4 plants |
front 15 CAM (crassulacean acid metabolism) plants such as cacti differ from standard C4 plants such as corn in which of the following ways? | back 15 Properties of CAM plants |
front 16 A thylakoid that is placed in a basic solution will synthesize ATP. How is this possible? | back 16 ? A proton gradient is created by the difference in pH. ? An electron gradient is created by the difference in pH. X ATP is formed spontaneously at low pH. ? The carbon reactions are blocked in the thylakoid at high pH. ? ATP cannot be broken down at low pH. If a thylakoid is placed in a basic solution ATP synthesis will
occur. |
front 17 Photons from light can boost an electron to a higher energy state. | back 17 True Harnessing energy from light |
front 18 A comparison of mitochondria and chloroplast shows that | back 18 Similarity between mitochondria and chloroplast |
front 19 Using 14CO2 as a radioactive tracer, which molecule would be the last to incorporate 14C within the Calvin cycle? | back 19 ribulose biphosphate (RuBP) Tracing carbon in Calvin cycle |
front 20 NADPH is produced by | back 20 light reactions alone Light reaction produces NADPH |
front 21 If you wanted to install lights to grow plants indoors, the type of light would you want to us is | back 21 visible light, because it has non-ionizing wavelengths. Properties of light |
front 22 Photorespiration | back 22 ? tends to occur under dry and hot conditions X occurs in c4 plants Photorespiration |
front 23 Both ATP and NADPH are required for | back 23 the Calvin cycle only Role of ATP and NADPH in Calvin cycle |
front 24 Mutation of molecules in photosystem I but not photosystem II would lead a plant cell to | back 24 Functions of both photosystems I and II |
front 25 When Calvin injected 14C labeled CO2 into cultures of green algae, what led him to conclude that rubisco adds CO2 to ribulose bisphosphate in the Calvin cycle? | back 25 Radioactivity appeared last in ribulose bisphosphate Review the role of rubisco mentioned in section 8.14. CO2 binds to
RuBP |
front 26 What would happen to a plant that is treated with a chemical that prevents electrons from moving through the electron transport chain? | back 26 It could not generate an electrochemical H+gradient across a membrane. Electron transport chain |
front 27 In which organelle of the plant does photosynthesis takes place? | back 27 chloroplast Chloroplast function |
front 28 CO2 binds to ____ in the Calvin cycle. | back 28 ribulose bisphosphate CO2 binds to RuBP |
front 29 What will happen to the pH inside a thylakoid that is exposed to light? | back 29 It will decrease As H+ move into a thylakoid the pH drops |
front 30 In the reaction, 6CO2 + 6H2O →C6H12O6 + 6O2, carbon dioxide is being ____. | back 30 reduced Carbon is reduced in the calvin cycle |
front 31 A plant becomes dried out when | back 31 stomata close, decreasing gas exchange. Stomata close when they are dehydrated |
front 32 The organisms that most specifically utilize light energy to make organic molecules from inorganic molecules are | back 32 Photoautotrophs capture solar energy |
front 33 How might a plant cope with the fact that the Calvin cycle uses more ATP than NADPH, yet produces roughly the same amount of both energy intermediates in photosystems I and II? | back 33 Photosynthesis can revert from a noncyclic to cyclic electron flow, producing more ATP than NADPH. Cyclic electron flow |
front 34 When NADP+ _____ electrons in the light reaction it is ______ forming NADPH. | back 34 ? Accepts, reduced x Donates, reduced Reduction of NADP |
front 35 In hot and arid environments, plants that maximize photorespiration produce the most sugars. | back 35 False. Photorespiration decreases sugar production |
front 36 The Calvin cycle is only capable of fixing carbon dioxide in the dark. | back 36 False. Carbon fixation is independent of the light reactions |
front 37 Energy is carried from the light reaction to the carbon reaction by __________. | back 37 ATP Role of ATP in photosynthesis |
front 38 ________ consume organic molecules to live. | back 38 Heterotrophs Heterotrophs consume energy |
front 39 If a C3 plant that normally closes its stomata during hot, dry conditions were triggered to open them instead, the most likely outcome would be that | back 39 water leaves the leaf, decreasing the rate of photosynthesis. Function of stomata |
front 40 A plant performing photosynthesis will produce ____ and consume _____. | back 40 oxygen, carbon dioxide Role of oxygen and carbon dioxide in photosynthesis |
front 41 Succulent plants such as cacti or pineapple | back 41 produce 4-carbon malate in the first step of carbon fixation Properties of C4 plants |
front 42 Which molecules used during the Calvin cycle could be used by a cell in a reduction reaction? | back 42 CO2 reduction in Calvin cycle |
front 43 Products of the Calvin cycle include: Check all that apply. | back 43 1) NADP+ 2) Pi 3) ADP 4) glyceraldehyde-3-phosphate (G3P) Products of the Calvin cycle |
front 44 Molecules that are required for the Calvin cycle include: Check all that apply. | back 44 ? H2O ? CO2 ? NADPH ? rubisco ? ATP Requirements for Calvin cycle |
front 45 What is the main role of the pigment molecules within the antenna or light-harvesting complex? | back 45 Absorb photons and transfer light energy to the reaction center chlorophyll. Function of pigments in photosynthesis |
front 46 The equation, 6CO2 + 6H2O →C6H12O6 + 6O2, describes which of the following processes? | back 46 photosynthesis Photosynthesis equation |
front 47 The ultimate source of energy for reactions in a plant is ____. | back 47 the sun. Sunlight is the ultimate source of energy |
front 48 The process that forms the electrochemical gradient during photosynthesis is the | back 48 Function of electrochemical gradient |
front 49 A green plant is first grown in blue light and then in green light. The likely outcome for photosynthesis in both phases is | back 49 Increased plant growth in blue light and no plant growth in green light. Chlorophyll reflects green light |
front 50 The purpose of the light reaction is to produce ____. | back 50 NADPH and ATP The purpose of the light reaction |
front 51 Using 14CO2 as a radioactive tracer, which molecule would be the last to incorporate 14C within the Calvin cycle? | back 51 ribulose biphosphate (RuBP) Tracing carbon in Calvin cycle |
front 52 A new flower species has a unique photosynthetic pigment. The leaves of this plant appear to be blue-green. What wavelengths of visible light does this pigment reflect? | back 52 Properties of light |
front 53 When Calvin injected 14C labeled CO2 into cultures of green algae, which of the following was observed because the molecule accepting the CO2 was unstable? | back 53 Radioactivity first appeared in 3-phosphoglycerate Review the role of rubisco mentioned in section 8.5. CO2 first appears in 3-PG Blooms Level: 4. Analyze |
front 54 Where does the Calvin cycle occur? | back 54 chloroplast stroma Location of Calvin cycle |
front 55 Succulent plants such as cacti or pineapple | back 55 produce 4-carbon malate in the first step of carbon fixation Properties of C4 plants |
front 56 When NADP+ _____ electrons in the light reaction it is ______ forming NADPH. | back 56 accepts, reduced Reduction of NADP |
front 57 In the reaction, 6CO2 + 6H2O →C6H12O6 + 6O2, which side should energy be placed on? | back 57 The left side, this is an endergonic reaction Photosynthesis equation |
front 58 Photons from light can boost an electron to a higher energy state. | back 58 True Harnessing energy from light |
front 59 If a C3 plant that normally closes its stomata during hot, dry conditions were triggered to open them instead, the most likely outcome would be that | back 59 water leaves the leaf, decreasing the rate of photosynthesis. Function of stomata |
front 60 A comparison of mitochondria and chloroplast shows that | back 60 Similarity between mitochondria and chloroplast |
front 61 Which of the following represents a reactant in the light reaction of photosynthesis? | back 61 H2O Reactants for light reaction |
front 62 Energy is carried from the light reaction to the carbon reaction by __________. | back 62 ATP Role of ATP in photosynthesis Blooms Level: 1. Remember |
front 63 A C4 plant minimizes photorespiration by | back 63 having the light reactions and carbon reactions occur in different cells, so oxygen does not come into contact with rubisco. Isolating O2 reduces photorespiration in C4 plants |
front 64 CO2 binds to ____ in the Calvin cycle. | back 64 ribulose bisphosphate CO2 binds to RuBP |
front 65 In which organelle of the plant does photosynthesis takes place? | back 65 chloroplast Chloroplast function |
front 66 If you wanted to install lights to grow plants indoors, the type of light would you want to us is | back 66 visible light, because it has non-ionizing wavelengths. Properties of light |
front 67 NADPH is produced by | back 67 light reactions alone. Light reaction produces NADPH |
front 68 When NADPH _____ electrons in the Calvin cycle it is ______, forming NADP+ | back 68 donates, oxidized Oxidation of NADPH in Calvin cycle |
front 69 ________ consume organic molecules to live. | back 69 Heterotrophs Heterotrophs consume energy |
front 70 A plant becomes dried out when | back 70 stomata close, decreasing gas exchange Stomata close when they are dehydrated |
front 71 A thylakoid that is placed in a basic solution will synthesize ATP. How is this possible? | back 71 ATP is formed spontaneously at low pH If a thylakoid is placed in a basic solution ATP synthesis will
occur. |
front 72 The pigment responsible for the red-yellow coloration seen in leaves during the color change in autumn is | back 72 carotenoid Carotenoids reflect red-yellow light |
front 73 The rate of photosynthesis is much greater in green light than red light. | back 73 False Colors used for photosynthesis |
front 74 A plant performing photosynthesis will produce ____ and consume _____. | back 74 oxygen, carbon dioxide Role of oxygen and carbon dioxide in photosynthesis |
front 75 Products of the Calvin cycle include: Check all that apply. | back 75 1) NADP+ 2) Pi 3) ADP 4) glyceraldehyde-3-phosphate (G3P) Products of the Calvin cycle |
front 76 Blue light has ___ energy than red light and is ____ by a green leaf. | back 76 more, absorbed Blue light has more energy than red light |
front 77 Which molecules used during the Calvin cycle could be used by a cell in a reduction reaction? | back 77 NADPH CO2 reduction in Calvin cycle |
front 78 Plants require a lot of water for transpiration, metabolism, and photosynthesis. How is water used in photosynthesis? | back 78 As an electron donor Role of water in photosynthesis |
front 79 The ultimate source of energy for reactions in a plant is ____. | back 79 the sun. Sunlight is the ultimate source of energy |
front 80 The main structure for gas exchange in plants is called the | back 80 stomata. Function of stomata |
front 81 The process that forms the electrochemical gradient during photosynthesis is the | back 81 pumping of H+ into the thylakoid lumen. Function of electrochemical gradient |
front 82 What would happen to a plant that is treated with a chemical that prevents electrons from moving through the electron transport chain? | back 82 It could not generate an electrochemical H+gradient across a membrane. Electron transport chain |
front 83 Mutation of molecules in photosystem I but not photosystem II would lead a plant cell to | back 83 ? produce ATP and NADP+ X produce O2, ATP, and NADPH
Functions of both photosystems I and II |
front 84 Harnessing light and splitting water occurs in both photosystem I and II. | back 84 False Splitting water with energy from light |
front 85 Both ATP and NADPH are required for | back 85 the Calvin cycle only Role of ATP and NADPH in Calvin cycle |
front 86 In hot and arid environments, plants that maximize photorespiration produce the most sugars. | back 86 False Photorespiration decreases sugar production |
front 87 The equation, 6CO2 + 6H2O →C6H12O6 + 6O2, describes which of the following processes? | back 87 photosynthesis Photosynthesis equation |
front 88 The molecules that directly convert NADP+ to NADPH is/are | back 88 NADP reductase Function of NADP reductase |
front 89 CAM (crassulacean acid metabolism) plants such as cacti differ from standard C4 plants such as corn in which of the following ways? | back 89 CAM plants are limited to producing CO2 for the Calvin cycle during the day, while C4 plants produce CO2 for the Calvin cycle both during the day and at night Properties of CAM plants |
front 90 The purpose of the light reaction is to produce ____. | back 90 ATP and NADPH The light reaction produces ATP and NADPH |
front 91 What will happen to the pH inside a thylakoid that is exposed to light? | back 91 It will decrease As H+ move into a thylakoid the pH drops |
front 92 The Calvin cycle is only capable of fixing carbon dioxide in the dark. | back 92 False Carbon fixation is independent of the light reactions |
front 93 How might a plant cope with the fact that the Calvin cycle uses more ATP than NADPH, yet produces roughly the same amount of both energy intermediates in photosystems I and II? | back 93 Photosynthesis can revert from a noncyclic to cyclic electron flow, producing more ATP than NADPH. Cyclic electron flow |
front 94 A green plant is first grown in blue light and then in green light. The likely outcome for photosynthesis in both phases is | back 94 Increased plant growth in blue light and no plant growth in green light. Chlorophyll reflects green light |
front 95 The primary advantage C4 plants have over C3 plants is that | back 95 C4 plants minimize photorespiration compared with C3 plants Properties of C4 plants |
front 96 What is the main role of the pigment molecules within the antenna or light-harvesting complex? | back 96 Absorb photons and transfer light energy to the reaction center chlorophyll. Function of pigments in photosynthesis |
front 97 Molecules that are required for the Calvin cycle include: Check all that apply. | back 97 Requirements for Calvin cycle |
front 98 Photorespiration | back 98 Photorespiration |
front 99 Which of the following represents a reactant in the light reaction of photosynthesis? | back 99 H2O Reactants for light reaction |