4 SPACES THYLAKOID SPACE STROMA cytoplasm Gel-filled space inside chloroplast surroundingthylakoid sacGel-filled spaceInside thethylakoidsaccytoplasmGel-filled space OUTSIDE chloroplast but inside the cell membrane
5 Photosynthesis video click on Light-Dependent See a video clip about the LIGHT-DEPENDENT REACTION (Part 1) 8C
6 PHOTOSYNTHESIS HAPPENS IN CHLOROPLASTS Proteins that are part of the thylakoidmembrane contain________________________________ and the ______________ transport chainLight absorbing CHLOROPHYLLELECTRON
7 Light Reaction: Takes place in the Thylakoid membrane ATP (Energy released)ATPElectron TransportChainPigment/chlorophyle—H+HH2Oe--HHNADPO2wasteATP*Don’t have an endless supply of e—Need to replace H2oTo the Dark side!!!
8 Light Reaction H2O is split O is released to atmosphere H provides electrons to chlorophyll pigmentSunlight energy is absorbed by chlorophyllEXCITES electrons that Jump to electron transport chain
9 Light ReactionControlled release of high energy as electrons travel down the electron transport chain (stairs) and form - ATPAt end of Electron Transport Chain (bottom of stairs)NADP bus picks up H and ATP and goes to the dark side
10 LIVING THINGS NEED ENERGY CARRIERS Molecule that carries= _______Molecule that carries HIGH ENERGY ELECTRONS= ___________ATPNADP+Images by Riedell
18 PHOTOSYNTHESIS OVERVIEW Pearson Education Inc; Publishing as Prentice Hall
19 LIGHT DEPENDENT REACTION Requires ______________Takes place in the ________________Made up of __________________and _____________________Uses light energy to changeADP + P → _______NADP+ + 2e- + H + → _________Breaks apart ______ molecules and releases _____________LIGHTTHYLAKOID membranesChlorophyllELECTRON TRANSPORT CHAINATPNADPHH20oxygen
20 CALVIN CYCLE ____________ require ____________ (also called _________________________)____________ require ____________Happens in _________ between thylakoidsNADPH donates _______________ATP donates _________________CO2 donates ______________to make __________LIGHT INDEPENDENTDOES NOTLIGHTSTROMAHydrogen + electronsENERGYCarbon & oxygenGLUCOSE
21 Factors that Affect Photosynthesis AMOUNT OF WATER____________________Water is one of the raw materials needed, soA shortage of water can ________________photosynthesisslow or stopDesert plants and conifersthat live in dry conditionshave a waxy coating ontheir leaves to preventwater loss.
22 Factors that Affect Photosynthesis TEMPERATUREPhotosynthesis enzymes function best between 0° C - 35° CAt temperatures above or below this range, photosynthesis will slow or stopConifers in winter may carry outphotosynthesis only occasionally
23 Factors that Affect Photosynthesis LIGHT INTENSITY____________________More light increases rate of photosynthesisup to a certain level until plant reaches itsmaximum rate of photosynthesisSee effect of light experiment
24 THE BIG PICTURE sugars PHOTOSYNTHESIS provides the _____________ we breatheand the __________heterotrophs (like us)consume to surviveOXYGENsugarsCarbon dioxideSugarsWATEROxygen_____________ + ____________ _______________ + ____________