细胞的呼吸ppt课件.ppt

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1、WhathappenstoGlucosemadeinPhotosynthesis?Whatisthechemicalformulaforglucose?C6H12O6Remembertheformulathatshowsglucosesugarismadebyplantsduringphotosynthesis:6CO2+6H2O→C6H12O6+6O2sunlightGlucosemoleculescontainalotofEnergyinchemicalbondsholdingthecarbon

2、,hydrogen,andoxygentogether.Wecanthinkofglucosemadeinphotosynthesisasa“Bank”forenergystorage(butitcan’tbedirectlyused)Thebigquestionis:Howcanwegettheenergyoutofglucose(outofthebank)soitcanbeUSEDbycells?1THEENERGYCANBEREMOVEDINONEOFTWOWAYS.Whichwaydepen

3、dsonwhetherthereis__________present.EnergyRemovalMethod#1:AerobicCellularRespiration(usingoxygen)EnergyRemovalMethod#2:AnaerobicRespiration(Fermentation)(nooxygenpresent)oxygen2AerobicCellularRespirationFormula:C6H12O6+6O2→6CO2+6H2O+ATPenergyTheprocess

4、ofconvertingfoodenergyintoATPenergy,usedbyalllivingorganisms.Theprocessofaerobiccellularrespirationtakesplaceinorganellescalled_____________.Mitochondria______________________.Whynotbreakdownglucosedirectlyforenergy?Glucose90timesmoreenergythan1ATP.But

5、,ifcellsbrokedownglucoseforenergy,toomuchenergywouldbereleasedandtherestwouldbewastedasheat.MitochondriaAbsorbglucoseandturnitintoATP3WhatisATP?AdenosineTriphosphate5-Carbonsugar(Ribose)Nitrogenousbase(Adenine)3PhosphategroupsEnergycurrencyforlivingcel

6、lsThechemicalbondsthatlinkthephosphategroupstogetherarehighenergybondsWhenaphosphategroupisremovedtoformADPandP,asmallpacketofenergyisreleased(justenoughforcellularactivities)4ATPisusedto______.Movemuscles,sendsignalsthroughyourbrain,digestyourfoodSynt

7、hesizemoleculesforgrowthandreproductionMovematerialsinandoutofcellsAsATPisbrokendown,itgivesoffusableenergytopowerchemicalworkandsomenonuseableenergyasheat.5Mitochondriaarecalledthe…“PowerhousesoftheCell”becausetheyproducesomuchusefulenergy!Thereare___

8、______ofmitochondriaineachcell:AerobicRespirationproduces_____ofATPenergy.WithlotsofATP,youcangrowa______________and____________.Alargebodyismadeofmanycells(multicellular)thatneedlotsofenergyto“talk”toeachother.dozensLOTSlargebodymoveve