Electron Transport Chain ( occurs in the cristae)14Krebs CyclePyruvic acid is broken down into CO2 and energy.Krebs cycle starts when pyruvic acid enters the mitochondrion.Before the cycle starts, pyruvic acid is converted to a 6 carbon compound called citric acid. The pathway depends on if there is oxygen present13Aerobic Cellular Respiration Occurs in the mitochondria.Requires oxygen 2 reactions occur:1. Lactic Acid Fermentation:Pyruvic acid + NADH lactic acid + NAD+Produced in muscles during rapid exercise when the body cannot supply enough oxygen to the tissues. This produces a bad waste which is alcohol or lactic acid.Two kinds of Fermentation: Alcoholic Fermentation & Lactic acid fermentationAlcoholic Fermentation:Yeast and some microorganisms use alcoholic fermentation. Glycolysis10CCCCCCCCCCCCCCCCCC2 ATP 2 ADP4 ADP 4ATP2NAD+ 2NADHThese go to the electron transport chain2 Pyruvic acid GlucoseNet gain of ATP is 2Glycolysis11Anaerobic: No Oxygen present: FermentationFermentation is Anaerobic.2 ATP- made onlyDuring fermentation, cells recycle the NADH made in glycolysis. (just like NADP+ becoming NADPH in photosynthesis) Produces a net of 2 ATP, 2 NADH Oxygen is not neededSeries of reactions which break the 6-carbon glucose molecule down into two 3-carbon molecules called pyruvateEnergy is needed to start, so 2 ATP are borrowed to start glycolysis.4 ATP are made by glycolysis, but the net gain is only 2 ATP because the 2 borrowed must be given back.Produces an energy carrying molecule called NAD+.It picks up a pair of high energy electrons becoming NADH. Occurs in CytoplasmOccurs across CristaeOccurs in Matrix8GlycolysisOccurs in the cytoplasm of the cell.
GlycolysisFermentationKrebs CycleElectron Transport ChainNo OxygenOxygen Present6Cellular Respiration: An Overview Cells can produce a small amount of energy without oxygen.Most of Cellular respiration takes place in the mitochondrion.Īnaerobic respiration-respiration with out oxygenAerobic respiration- respiration with oxygen5Cellular RespirationRespiration starts outside the mitochondrion in the cytoplasm in a process called glycolysis.After glycolysis, the path depends on whether oxygen is present or not.
This is the calories that is on food labels.4Chemical equation of Cellular Respiration6O2 + C6H12O6 6CO2 + 6H2O +Energy Oxygen + Glucose Carbon dioxide + water+ EnergyĬellular Respiration must have oxygen to produce energy. 3Cell chemical energy comes from food.Food is where living things get their energy.The food is broken down to glucose.The mitochondrion converts glucose and oxygen to energy.1g glucose with oxygen releases 3811 calories of heat energy.Calorie- the amount of energy needed to raise the temperature of 1g of water 1 degree Celsius.A kilocalorie (C)- 1000 calories. The process of glycolysis yields a net increase of _ ATP molecules. The anaerobic process that leads to cellular respiration is called _. In what part of the mitochondria does Krebs cycle occur in ? 2Cellular RespirationĬellular respiration is a process in all eukaryotes that breaks down sugars and other carbon based molecules to make _ when oxygen is present. What is the function of cellular respiration?5. Cellular respiration is an aerobic process. In what cell structure does cellular respiration take place?3. What is the equation for cellular respiration?2.
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