4SPACES THYLAKOID SPACE STROMA cytoplasm Gel-filled space inside chloroplast surroundingthylakoid sacGel-filled spaceInside thethylakoidsaccytoplasmGel-filled space OUTSIDE chloroplast but inside the cell membrane
5Photosynthesis video click on Light-Dependent See a video clip about the LIGHT-DEPENDENT REACTION (Part 1) 8C
6PHOTOSYNTHESIS HAPPENS IN CHLOROPLASTS Proteins that are part of the thylakoidmembrane contain________________________________ and the ______________ transport chainLight absorbing CHLOROPHYLLELECTRON
7Light 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!!!
8Light 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
9Light 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
10LIVING THINGS NEED ENERGY CARRIERS Molecule that carries= _______Molecule that carries HIGH ENERGY ELECTRONS= ___________ATPNADP+Images by Riedell
18PHOTOSYNTHESIS OVERVIEW Pearson Education Inc; Publishing as Prentice Hall
19LIGHT 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
20CALVIN CYCLE ____________ require ____________ (also called _________________________)____________ require ____________Happens in _________ between thylakoidsNADPH donates _______________ATP donates _________________CO2 donates ______________to make __________LIGHT INDEPENDENTDOES NOTLIGHTSTROMAHydrogen + electronsENERGYCarbon & oxygenGLUCOSE
21Factors 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.
22Factors 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
23Factors 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
24THE BIG PICTURE sugars PHOTOSYNTHESIS provides the _____________ we breatheand the __________heterotrophs (like us)consume to surviveOXYGENsugarsCarbon dioxideSugarsWATEROxygen_____________ + ____________ _______________ + ____________