Presentation on theme: "9.3 Getting Energy to Make ATP"— Presentation transcript:
1 9.3 Getting Energy to Make ATP Cellular RespirationFermentationPhotosynthesis vs. Cellular Respiration
2 Cellular RespirationProcess by which mitochondria break down food to make ATP3 Steps of Cellular Respiration1. __________________2. _______________ (Krebs Cycle)3. ___________________________1st stage: Anaerobic 2–3 stages: Aerobic
3 Glycolysis = No OxygenSeries of chemical rxns in the cytoplasm that breaks down _____________, a 6 carbon compound, into 2 molecules of ________________, a 3 carbon compound.2ATP used to start glycolysis and 4ATP produced = not efficient source of energyWhat is the net ATP produced? #NADH? #Hydrogens?
4 Citric Acid Cycle = Oxygen Pyruvic acid from the cytoplasm moves into the ______________.Before it can begin the CAC, it must undergo some changes before it enters the _______________________.Pyruvic acid gives off a molecule of ______ and combines with coenzyme A, to form ________________.Acetyl-CoA produces NADH and H+ and this begins the ____________________________.
5 Citric Acid Cycle continued 1: Acetyl CoA reacts with 4C compound to form a Citric Acid (4 + 2 = __C)2: CO2 produced, converting a 6C molecule to a ___C molecule.(6-1 = __) During this time NADH and H+ is produced.3: Another molecule of CO2 released, makes a 4C compound, 1 ATP, and 1 NADH4: 4C compound goes through a series of reactions and produces FADH2, NADH, and H+Carbon chain rearranged and starts all over again when set up with Acetyl – CoA(NAD + and FAD are used as electron carriers for the ETC of the mitochondria)For every turn of the cycle 1 ATP and 2 CO2 molecules produced
6 Electron Transport Chain Inner membrane of the mitochondrion1: _______and _______deliver energized electrons to the mitochondrial membrane2: Electrons are passed from protein to protein, releasing _______along the way. Some of the energy is used directly to form ________ or H+ ions into mitochondria.Inside becomes __________charged, so outside the membrane becomes ____________. This drives the energy for _________ production3. Final electron acceptor = Oxygen. It reacts with 4 H+ and 4 electrons to form 2 ______ molecules.Adds _______ ATP molecules to the 4 already produced.Why is oxygen so important to the process?
7 Lactic Acid Fermentation Follows glycolysis and provides a means of producing ATP until oxygen is readily availableAerobic or anaerobic?_______________________2 molecules of _______________ produced in glycolysis use NADH to form 2 molecules of _______________.Releases NAD+ and 2 ATP for each _____________ moleculeLactic acid is transferred from muscle cells, to the liver that converts it back to pyruvic acid. Lactic acid that builds up in muscle cells = muscle ______________.
8 Alcoholic Fermentation Used by yeast cells and some bacteria to produce _______ and ______________.Glucose Glycolysis (2 pyruvic acids) carbon dioxide + alcohol + 2 ATPEfficient?_________________________
9 Comparison of Photosynthesis and Cellular Respiration Photosynthesis (Chloroplasts)_________synthesizedEnergy from sun stored in _______________________________ given offProduces sugars from PGALRequires _____________Occurs only in presence of ____________________Cellular Respiration(Mitochondria)__________ broken downEnergy of _______ released______________ taken inProduces _____________ and _______________Does not require ________Occurs in all living _______