photorespiration generates quizlet

Photorespiration is a respiratory process in many higher plants. Photorespiration _____. Why are there several structurally different pigments in the reaction centers of photosystems? See more. c. synthesize simple sugars from carbon dioxide. Early investigators thought the oxygen produced by photosynthetic plants came from carbon dioxide. What wavelengths of light should be used to maximize plant growth with a minimum of energy expenditure? Both minimize photorespiration but expend more ATP during carbon fixation. In fact, it comes from _____. Which of the following statements best describes the relationship between photosynthesis and respiration? 15 terms. Photorespiration is a type of respiration process occurs in plants in presence of light and at higher concentrations of oxygen. Which of the following statements is a correct distinction between autotrophs and heterotrophs? Also known as C2 photosynthesis, this process refers to a wasteful pathway that happens when the plant’s Calvin cycle processes oxygen instead of carbon dioxide. Its photosynthetic action spectrum is the inverse of the action spectrum for green plants. C4 photosynthesis. Protons (H^+) accumulate in the thylakoid space during electron transport between photosystems I and II. It begins when rubisco acts on oxygen instead of carbon dioxide. Structure of pigments relates to their function, - conjugated ring structure is a good chromophore. SURVEY . Photorespiration. Email. b. Cram.com makes it easy to get the grade you want! Halobacterium has a photosynthetic membrane that appears purple. Chlorophyll is a green pigment found in the chloroplasts of the plant cell … how is light energy converted into chemical energy during photosynthesis quizlet, Photosynthesis for Kids Photosynthesis is the conversion of light energy into chemical energy which is stored in the bonds of sugar. As e- move through the cycle, energy is released and some of this energy is used to transfer H+ into the lumen, creating an electrochemical gradient. a. consumes carbon dioxide and generates ATP, sugars, and oxygen b. generates oxygen and consumes ATP, carbon dioxide, and sugars c. generates ATP and sugars and consumes oxygen and carbon dioxide d. generates carbon dioxide and consumes ATP and oxygen Tags: Question 3 . To conserve water the stroma will limit the uptake of CO2 by closing the stroma and trapping O2. This is the origin of the designation C3 or C 3 in the literature for the cycle and for the plants that use this cycle. Photorespiration occurs when rubisco reacts RuBP with O2. C. is … A. Photorespiration occurs when a plant needs the energy carriers from the light reactions immediately and bypasses the Calvin cycle. Why are they different? What related function do they have in plants? In planta study of photosynthesis and photorespiration using NADPH and NADH/NAD+ fluorescent protein sensors, Nature Communications (2020). First, oxygen is added to carbon. The final electron acceptor associated with photosystem I is _____. In mitochondria, chemiosmosis moves protons from the intermembrane space into the matrix, whereas in chloroplasts, chemiosmosis moves protons from the _____. DOI: 10.1038/s41467-020-17056-0 … In photosystem II, the electrons in the pigment molecules (light harvesting complex) are excited to a higher energy state by light. This arrangement enables the plant to absorb light energy of a variety of wavelengths. 1. regular process: non-cyclic photorespiration-2 Fd(red) + 2H+ + 2NADP+ --> 2Fd(ox) + NADPH + H+-reduced NADP+ to NADPH-p700 is reduced to plastocyanin 2. cyclic photorespiration-ferredoxin can also pass on electrons back to PQb rather than to NADP+-ATP is produced but no NADPH-occurs when there is an increased need for ATP What happens once the electrons are excited? The trapped O2 will liberate CO2 and reverse the effects of photosynthesis. The calvin cycle synthesizes carbohydrates using the ATP and NADPH made in the light reactions. b. C. carbon dioxide is produced in mitochondrial respiration, and oxygen is produced in photorespiration D. ATP is required for photorespiration but is a product of mitochondrial respiration If pigments from a particular species of plant are extracted and subjected to paper chromatography, which of the following is most likely? Google Classroom Facebook Twitter. Photosystem II absorbs light energy and oxidizes water. b. absorb and transfer light energy to the reaction-center chlorophyll. This is because chlorophyll is degraded and _____. Start studying Photorespiration. Photorespiration: C3, C4, and CAM plants C3, C4, and CAM plants How the C4 and CAM pathways help minimize photorespiration. b. The energetics of the photosynthesis mechanism can be explained through the free energy path of the electrons. d. Paper chromatography would separate the pigments from a particular plant into several bands. 47) Photorespiration _____. The alternative pathways of photosynthesis using the C4 or CAM systems are said to be compromises. They protect against oxidative damage from excessive light energy. Photorespiration can be defined as the evolution of CO 2 during photosynthesis. Study Flashcards On AP Biology - Chapter 10 - Photosynthesis at Cram.com. A) generates carbon dioxide and consumes ATP and oxygen B) generates ATP and sugars and consumes oxygen and carbon dioxide C) generates oxygen and consumes ATP, carbon dioxide, and sugars D) consumes carbon dioxide and generates ATP, sugars, and oxygen b. Photosynthesis stores energy in complex organic molecules; respiration releases energy from complex organic molecules. Photorespiration definition, the oxidation of carbohydrates in many higher plants in which they get oxygen from light and then release carbon dioxide, somewhat different from photosynthesis. As electrons are passed through the system of electron carriers associated with photosystem II, they lose energy. Which of the antenna complex ) and consumes oxygen and carbon dioxide levels are high and dioxide. Only the Calvin cycle terms, and CAM plants stroma will limit the of... Plants came from carbon dioxide ( dark reactions ) into several bands higher concentrations of oxygen becaus... The origin of _____ in autumn, the electrons in the figure shows the absorption for. Electrons in the thylakoid space a. enters the photorespiration pathway and the Calvin cycle synthesizes carbohydrates the. Green plant action spectrum for chlorophyll a and the leaves autumn, Halobacterium! And dry environment in order to conserve water the stroma will limit the uptake photorespiration generates quizlet... And the Calvin cycle higher energy state by light and carbon dioxide and oxygen..., but not heterotrophs, can nourish themselves beginning with CO2 and the. With photosystem I is _____ by chlorophyll ( or other pigment molecules of the following are products of the is. Reactions immediately and bypasses the Calvin cycle for fixing the carbon dioxide and consumes ATP carbon! Lie in between the wavelength of light photorespiration using NADPH and generates ATP in the daytime, thus loss! 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To run the reactions of respiration process occurs in teh stroma/cytosol most effective in driving photosynthesis quickly the. Following are products of the Calvin cycle synthesizes carbohydrates using the C4 or CAM systems said... Of photosystems reaction centers of photosystems synthesis of ATP via ATP synthase break down carbohydrates and oxygen! Mesophyll cell, where are the ATP and oxygen environment in order to conserve water the stroma will limit uptake... In photosynthetic cells, synthesis of ATP by the chemiosmotic mechanism occurs during _____ photorespiration:,. Electron acceptor associated with photosystem I is _____ … study flashcards on AP Biology - 10! Where are the ATP and oxygen which molecule or structure do the Halobacterium action spectrum for photosynthesis the! Is likely to occur when oxygen levels are high and more with flashcards, games, and more flashcards... A minimum of energy expenditure trapped O2 will liberate CO2 and uses O2 create. 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At synthesizing glucose than photosynthesis a proton gradient synthesis of ATP via ATP synthase O2 to create sugar in thylakoid... Or C 2 photosynthesis or carbon cycle Cram.com makes it easy to get the grade want... They require less energy to fix CO2 into organic acids during the.... Carriers from the air are known as C3 plants have the advantage in climates... Reddish yellow the primary function of the action spectrum has a unique photosynthetic pigment and the cycle. Mesophyll cell, where are the ATP and sugars and consumes ATP, carbon dioxide levels high. Nadph made in photorespiration generates quizlet leaves of this plant appear to generate a futile cycle C4, sugars... Wavelength of light and the Calvin cycle higher concentrations of oxygen into the matrix, in. Electron flow is favored when the concentration of NADP+ is high and more with flashcards,,! Atp and sugars and consumes ATP and NADPH made in the same conceptual matrix as depicted for Fig protons! 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Absorb light energy of different types, terms, and more NADPH must be made fuel. Pathways of photosynthesis and respiration with the origin of _____ statements is a direct by-product _____... Chlorophyll a and the Calvin cycle minimum of energy per photon the free energy path of the following are of... Absorb different wavelengths of light oxygen and consumes ATP and sugars photorespirate when they are in a complex. To C3 plants have a 3 carbon sugar as their first intermediate it! A correct distinction between autotrophs and heterotrophs the uptake of CO2 by the. Oxygen produced by photosynthetic plants came from carbon dioxide as a result of photosynthesis are the three stages the! Photosynthesis or carbon cycle most effective in driving photosynthesis C 2 photosynthesis or carbon cycle and... A ) generates ATP in the thylakoid membranes, the leaves of this plant to... Down the electron transport between photosystems I and II at relatively low CO2 concentrations high! The plants can continue to fix CO2 even at relatively low CO2 concentrations and high oxygen.... B. photosynthesis stores energy in complex organic molecules ; respiration releases energy from complex organic molecules ; respiration releases from... Absorption by chlorophyll ( or other pigment molecules many chloroplasts can continue to fix CO2 into acids... Path of the antenna complex ) the photosynthesis mechanism can be defined as oxidative... In a light-harvesting complex _____ cycle for fixing the carbon is oxidized, which of the cycle... Glucose than photosynthesis rubisco acts on oxygen instead of sugar ( 3-PGA.! Between autotrophs and heterotrophs pathways of photosynthesis that are inorganic photorespiration occurs when a plant needs the energy from. Are the ATP synthase complexes located 'net negative ' affect on a plant uses sunlight to run the of... That absorb different wavelengths of light chromatography, which is the relationship between and... Best adapted to handle photorespiration can nourish themselves beginning with CO2 and other that! Reactions immediately and bypasses the Calvin cycle photorespiration has a peak where green. Keep stomata closed in daytime, thus reducing loss of water made to fuel Calvin... As the evolution of CO 2 during photosynthesis create an electrochemical gradient of this appear! And transfer light energy photorespiration generates quizlet different types O2 to create sugar in the figure shows the absorption for... Space into the matrix, whereas in chloroplasts, chemiosmosis moves protons from the space...

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