2 I. Cellular Energya. Cellular respiration-process of breaking down glucose molecules to produce energy (ATP)b. All cells go through cellular respiration----plant and animal cells
3 i. GLYCOLYSIS1. 1st step of cellular respiration2. Cells break down glucose to make 2 ATP and pyruvic acid3. Takes place in the cytoplasm
4 Aerobic versus Anaerobic Respiration Is Oxygen Present?Yes NoAEROBIC RESPIRATION ANAEROBIC RESPIRATIONMust have O No O2 is neededTakes place in the takes place in the mitochondria cytoplasmProduces 36 ATP produces 2 ATP
5 c. Aerobic Respiration i. Occurs only when oxygen is present ii. A series of reactions that change pyruvic acid into ATP
6 1. the Krebs cycle or the citric acid cycle takes place in the mitochondria i. It produces 2 ATP
7 2. The electron transport chain also takes place in the mitochondria and it produces 34 ATP iii. With glycolysis, aerobic respiration produces 36 NET ATP molecules from 1 glucose---2 ATP are used to drive the process
8 Figure 9–7 Electron Transport Chain Section 9-2Figure 9–7 Electron Transport ChainElectron TransportHydrogen Ion MovementChannelMitochondrionIntermembraneSpaceATP synthesesInnerMembraneMatrixATP ProductionGo to Section:
9 iv. ATP is used for cell processes, growth, repair, movement, homeostasis etc…
10 Figure 9–2 Respiration: An Overview Section 9-1Figure 9–2 Respiration: An OverviewMitochondrionElectrons carried in NADHElectrons carried in NADH and FADH2Pyruvic acidGlucoseElectron Transport ChainKrebs CycleGlycolysisMitochondrionCytoplasmGo to Section:
11 Aerobic Respiration Summary (including glycolysis) Glucose Net 36 ATPC6H12O (plus CO2 and H2O)Chemical reactionsRequiring ADP, ATP,Phosphate and Oxygen
12 Electron Transport Chain Section 9-2Cellular RespirationGlucose (C6H1206)+Oxygen (02)GlycolysisKrebs CycleElectron Transport ChainCarbonDioxide(CO2)+Water(H2O)Go to Section:
13 d. Anaerobic Respiration i. Occurs when no oxygen is presentii. Not very efficient---only produces 2 ATP molecules from one glucoseiii. There are different types of anaerobic respiration
14 1. Lactic Acid Fermentation -animal and some bacteria use this process a. Produces lactic acid (causes muscle soreness) and 2 ATP
15 2. Alcoholic Fermentation -plant cells and some microorganism like yeast a. Produces ethyl alcohol and CO2 and ATP
16 Alcoholic drinks are produced with fermentation, and bread is forced to rise from the carbon dioxide produced by yeast fermenting the bread.
17 The alcohol in bread is evaporated during the cooking process.
18 Fermentation (without oxygen) Chemical PathwaysSection 9-1GlucoseKrebs cycleElectron transportGlycolysisAlcohol or lactic acidFermentation (without oxygen)Go to Section:
22 Photosynthesis and respiration are almost exactly opposite reactions. 6CO2 + 6H2O + sun light C6H12O6 + 6O2Respiration:C6H12O6 + 6O2 6CO2 + 6H2O + ATP
23 Cellular RespirationPhotosynthesisTakes place in--Occurs when--What goes in?What comes out?Energy source?Result?
24 Cellular RespirationPhotosynthesisTakes place in--All cellsCells withChloroplastOccurs when--All of the timeIn the presence of lightWhat goes in?Carbohydrates and oxygenCO2 and H2OWhat comes out?Energy source?Chemical bondsLightResult?Energy is stored as ATPEnergy is stored as carbohydrates
25 Copy and CompleteWhat is the process that starts cellular respiration?Name three parts of aerobic respiration.How many ATP molecules are produced from one glucose molecule by glycolysis?Most of aerobic respiration occurs in the ____.Anaerobic respiration occurs in the___.During glycolysis, glucose is broken down into pyruvic acid, and two molecules of ATP are formed. What will happen next in a muscle cell if NO oxygen is present?
26 When yeast is deprived of oxygen, it will convert glucose into— Which process does NOT produce CO2?How many ATP molecules are produced form one glucose molecule during the entire process of aerobic respiration?How many net ATP molecules are produced from one glucose molecule if a cell undergoes anaerobic respiration?