Photorespiration (article) | Photosynthesis - Khan Academy

RuBP oxygenase-carboxylase (rubisco), a key enzyme in photosynthesis, is the molecular equivalent of a good friend with a bad habit. In the process of ... Ifyou'reseeingthismessage,itmeanswe'rehavingtroubleloadingexternalresourcesonourwebsite. Ifyou'rebehindawebfilter,pleasemakesurethatthedomains*.kastatic.organd*.kasandbox.orgareunblocked. CoursesMath:Pre-K-8thgradePre-Kthroughgrade2(KhanKids)Earlymathreview2ndgrade3rdgrade4thgrade5thgrade6thgrade7thgrade8thgradeSeePre-K-8thgradeMathMath:GetreadycoursesGetreadyfor3rdgradeGetreadyfor4thgradeGetreadyfor5thgradeGetreadyfor6thgradeGetreadyfor7thgradeGetreadyfor8thgradeGetreadyforAlgebra1GetreadyforGeometryGetreadyforAlgebra2GetreadyforPrecalculusGetreadyforAP®CalculusGetreadyforAP®StatisticsMath:highschool&collegeAlgebra1GeometryAlgebra2TrigonometryPrecalculusHighschoolstatisticsStatistics&probabilityCollegealgebraNEWAP®︎/CollegeCalculusABAP®︎/CollegeCalculusBCAP®︎/CollegeStatisticsMultivariablecalculusDifferentialequationsLinearalgebraSeeallMathTestprepSATLSATPraxisCoreMCATScienceMiddleschoolbiology-NGSSNEWMiddleschoolEarthandspacescience-NGSSNEWMiddleschoolphysics-NGSSNEWHighschoolbiologyHighschoolbiology-NGSSHighschoolphysicsHighschoolphysics-NGSSAP®︎/CollegeBiologyAP®︎/CollegeChemistryAP®︎/CollegeEnvironmentalScienceAP®︎/CollegePhysics1SeeallScienceComputingComputerprogrammingAP®︎/CollegeComputerSciencePrinciplesSeeallComputingArts&humanitiesUShistoryAP®︎/CollegeUSHistoryUSgovernmentandcivicsAP®︎/CollegeUSGovernment&PoliticsWorldHistoryProject-OriginstothePresentWorldHistoryProject-1750tothePresentArthistoryAP®︎/CollegeArtHistorySeeallArts&HumanitiesEconomicsMacroeconomicsAP®︎/CollegeMacroeconomicsMicroeconomicsAP®︎/CollegeMicroeconomicsSeeallEconomicsReading&languageartsUpto2ndgrade(KhanKids)2ndgrade3rdgrade4thgrade5thgrade6thgrade7thgrade8thgrade9thgradeGrammarSeeallReading&LanguageArtsLifeskillsSocial&emotionallearning(KhanKids)CareersPersonalfinanceGrowthmindsetInternetsafetyNEWSeeallLifeSkillsSearchDonateLoginSignupSearchforcourses,skills,andvideosMaincontentScienceBiologylibraryPhotosynthesisPhotorespiration:C3,C4,andCAMplantsPhotorespiration:C3,C4,andCAMplantsPhotorespirationC4photosynthesisCAMplantsPhotorespirationThisisthecurrentlyselecteditem.C3,C4,andCAMplantsPractice:PhotorespirationScience·Biologylibrary·Photosynthesis·Photorespiration:C3,C4,andCAMplantsPhotorespirationPhotorespirationisawastefulpathwaythatcompeteswiththeCalvincycle.Itbeginswhenrubiscoactsonoxygeninsteadofcarbondioxide.GoogleClassroomFacebookTwitterEmailPhotorespiration:C3,C4,andCAMplantsPhotorespirationC4photosynthesisCAMplantsPhotorespirationThisisthecurrentlyselecteditem.C3,C4,andCAMplantsPractice:PhotorespirationSortby:TopVotedCAMplantsC3,C4,andCAMplantsUpNextC3,C4,andCAMplantsBiologyisbroughttoyouwithsupportfromtheAmgenFoundationBiologyisbroughttoyouwithsupportfromthe