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Name: ____ANSWER KEY___ Period: _________________ Date: ________________________Ch.7 Photosynthesis Review PacketKey Terms:PhotosynthesisAutotrophsPhotoautotrophsHeterotrophsChlorophyllMesophyllStomataStromaThylakoidsLight reactionsCalvin cycleCarbon fixationElectromagnetic spectrumPhotonPhotosystemLight-harvesting complexesPigmentsPhotophosphorylationRuBPRubiscoC3 plantsPhotorespirationC4 plantsCAM plantsGreenhouse effectGlobal climate changeI. Multiple Choice. Please choose the BEST answer.1) PhotoautotrophsA) make sugar by using organic raw materials.B) produce organic molecules from inorganic molecules.C) eat other organisms that use light energy to make food molecules.D) include only the green plants.2) In most green plants, chloroplasts areA) concentrated in a zone of leaf tissue called the mesophyll.B) concentrated in a portion of the leaf called the stroma.C) evenly distributed throughout the leaf tissue.D) evenly distributed throughout the entire plant.3) Where is chlorophyll found in a plant cell?A) stromaB) thylakoid membranesC) cytoplasmD) cristae4) The oxygen released into the air as a product of photosynthesis comes fromA) water.B) glucose.C) carbon dioxide.D) chlorophyll.5) The light reactions occur in the ________, while the Calvin cycle occurs in the ________.A) stroma; thylakoid membranesB) stroma; nucleusC) cytoplasm; thylakoid membraneD) thylakoid membranes; stroma6) Which of the following are produced during the Calvin cycle?A) glucose, ADP, NADP+B) glucose, ADP, NADP+, CO2C) ATP, NADPH, O2D) ATP, NADPH, CO27) Which of the following wavelengths of light would you expect to be reflected or transmitted by chlorophyll a?A) blueB) greenC) yellowD) red8) The addition of oxygen instead of carbon dioxide to RuBP results inA) cellular respiration.B) photorespiration.C) photophosphorylation.D) aerobic respiration.9) Plant cells are protected from the harmful effects of excessive light energy and reactive oxidative molecules byA) mitochondria.B) chlorophyll.C) carotenoids.D) ATP10) Carbon fixationA) occurs when carbon atoms from CO2 are incorporated into an organic molecule.B) supplies the cell with ATP.C) occurs during the light reactions.D) provides the cell with a supply of NADPH molecules.11) Clusters of light-gathering pigments in a photosystemA) pass energy to the reaction center.B) are found in the roots of plants.C) absorb electrons.D) break down H2O.12) The energy that excites the photosystems is supplied byA) electrons passing down the electron transport chain.B) ATP.C) photons.D) NADPH.13) The electron transport chains of the light reactionsA) are located in the stroma.B) shuttle electrons from photosystem II to photosystem I.C) provide energy for the citric acid cycle.D) are found on the plasma membrane of mesophyll cells.14) Photophosphorylation during photosynthesis differs from oxidative phosphorylation during cellular respiration in thatA) it involves an electron transport chain.B) energy is stored in the form of a proton (H+) concentration difference.C) generation of ATP is driven by a flow of protons (H+) through ATP synthase.D) the final electron acceptor is NADP+ and not oxygen.15) Global warming due to the greenhouse effect may beA) moderated by photosynthesis, which removes carbon dioxide from the atmosphere.B) made worse by photosynthesis, which adds carbon dioxide to the atmosphere.C) reduced by the burning of fossil fuels, which removes oxygen from the atmosphere.D) of little concern, since it is part of the normal cycle for the planet.16) NADH is also used by cells when making certain molecules. Based on your knowledge of NADH’s role in cellular respiration, what do you think NADH’s role is in biosynthesis of molecules?A) oxidizing moleculesB) reducing moleculesC) phosphorylating moleculesD) dehydrating moleculesE) none of the above17) Put the following steps of the light reactions in the correct order:1. Light excites an electron from photosystem I.2. Light excites an electron from photosystem II.3. Electrons reduce NADP+ to NADPH.4. Electrons pass through an electron transport chain, which generates a H+ gradient used to make ATP.A) 1, 2, 3, 4B) 1, 4, 2, 3C) 2, 4, 1, 3D) 2, 3, 1, 4E) None of the aboveII. Conceptual UnderstandingYou should understand and be able to thoroughly explain the following:How electrons move through the light reactions and how ATP and NADPH are formedThe general sequence of the Calvin cycleHow the Calvin cycle is related to the light reactionsThe similarities and differences between photosynthesis and cellular respiration; of chloroplasts and mitochondriaANSWER KEY ................
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