Presentation on theme: "Cellular respiration makes ATP by breaking down sugars."— Presentation transcript:
1 KEY CONCEPT The overall process of cellular respiration converts sugar into ATP using oxygen.
2 Cellular respiration makes ATP by breaking down sugars. Cellular respiration is aerobic, or requires oxygen.Aerobic stages take place in mitochondria.mitochondrionanimal cell
3 Glycolysis must take place first. anaerobic process (does not require oxygen)takes place in cytoplasmsplits glucose into two three-carbon moleculesproduces two ATP molecules
4 Cellular respiration is like a mirror image of photosynthesis. The Krebs cycle transfers energy to an electron transport chain.takes place in mitochondrial matrixbreaks down three-carbon molecules from glycolysis6H O26CO6Omitochondrionmatrix (area enclosedby inner membrane)inner membraneATPenergyenergy from glycolysis143andKrebs Cyclemakes a small amount of ATPreleases carbon dioxidetransfers energy-carrying molecules
5 energy from glycolysis The electron transport chain produces a large amount of ATP.takes place in inner membraneenergy transferred to electron transport chainoxygen enters processATP produced6H O26CO6Omitochondrionmatrix (area enclosedby inner membrane)inner membraneATPenergyenergy from glycolysis143andElectron Transportwater released as a waste product
6 The equation for the overall process is: C6H12O6 + 6O2 6CO2 + 6H2OThe reactants in photosynthesis are the same as the products of cellular respiration.
7 KEY CONCEPT Fermentation allows the production of a small amount of ATP without oxygen.
8 Fermentation allows glycolysis to continue. Fermentation allows glycolysis to continue making ATP when oxygen is unavailable.Fermentation is an anaerobic process.occurs when oxygen is not available for cellular respirationdoes not produce ATP
9 Fermentation allows glycolysis to continue making ATP when oxygen is unavailable. NAD+ is recycled to glycolysisLactic acid fermentation occurs in muscle cells.glycolysis splits glucose into two pyruvate moleculespyruvate and NADH enter fermentationenergy from NADH converts pyruvate into lactic acidNADH is changed back into NAD+
10 Fermentation and its products are important in several ways. Alcoholic fermentation is similar to lactic acid fermentation.glycolysis splits glucose and the products enter fermentationenergy from NADH is used to split pyruvate into an alcohol and carbon dioxideNADH is changed back into NAD+NAD+ is recycled to glycolysis
11 Fermentation is used in food production. yogurtcheesebread