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Bacteria Metabolism (Obtaining and Releasing Energy)
By: Abigail Craig, Nikki Malizia, and Jacqui Worth
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Overview How Prokaryotic cells obtain energy
Hoe Eukaryotic cells obtain energy How Prokaryotic cells release energy How Eukaryotic cells convert energy Different types of fermentation Products resulted from fermentation
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Prokaryotes and how they obtain energy NM
Heterotrophs consume other organisms for energy and carbon Found in a wide range of environments Photoheterotrophs are like heterotrophs but use light energy They cannot use carbon dioxide as their carbon source Found where light is plentiful
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Prokaryotes and how they obtain energy NM
Photoautotrophs use light energy to turn CO2 into carbon compounds Found where light is plentiful Chemoautotrophs use energy released by chemical reactions Found in chemically harsh and dark environments
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Eukaryotes and how they obtain energy NM
Cellular Respiration is how organisms get their energy 6O2 + C6H12O CO2 + 6H2O + Energy
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Eukaryotes and how they obtain energy NM
Cellular Respiration requires oxygen and a food molecule, such as glucose, to give off carbon dioxide, water, and energy Cells can use all sorts of molecules for food Proteins Fats Carbohydrates
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How Prokaryotes release energy? Ac
By either cellular respiration or fermentation Depends on environment Oxygen or not
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Modes of Metabolism Ac Obligate anaerobes-killed by normal atmosphere and oxygen Obligate aerobes-require oxygen to grow and survive Facultative anaerobes-use aerobic respiration but capable of anaerobic respiration
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How Eukaryotes convert chemical energy? Ac
Process: Krebs Cycle Location: Mitochondria Type of cells: Eukaryotic
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Krebs Cycle Ac Requires: Oxygen Produces: Carbon dioxide
Converts ADP ATP
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Fermentation JW Fermentation: Process in which cells release energy in the lack of oxygen Alcoholic Fermentation: Process in which sugars turn into ATP, which produces ethanol and CO2 Lactic Acid Fermentation: Process in which pyruvic acid is converted to lactic acid without giving off CO2
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What compound does Fermentation Produce? JW
Pyruvic Acid + NADH ---> Lactic Acid + NAD+ What compound does Fermentation Produce? JW Lactic Acid fermentation produces NAD+ If cell does not have NAD+ then cell cannot produce ATP NAD+ causes the cell to go back to Glycolysis In Glycolysis, ATP provides the cell with energy to keep the cell going
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Products Alcoholic Fermentation Helps to Make JW
Causes dough for bread to rise and bake Produces alcoholic beverages Drinks that people love and enjoy are products of alcoholic fermentation
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Products Lactic Acid Fermentation Helps to Make JW
Dairy products – cheese, sour cream, yogurt, buttermilk, etc Sour foods – pickles, kimchi, and sauerkraut Products that people eat every day, are products of lactic acid fermentation
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ABC's NM What is a heterotroph?
A) An organism that uses light for energy B) An organism that uses light and other organisms for energy C) An organism that only uses other organisms for energy D) An organism that doesn’t need energy
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ABC's NM What are the products of cellular respiration?
A) sugar, water, oxygen B) carbon dioxide, water, energy C) energy, water, carbon D) oxygen, nitrogen, carbon dioxide
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Ac ABC's What cycle does Eukaryotic cells go through to converts energy? A) Glycolysis B) Krebs Cycle C) ETC D) Fermentation
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Ac ABC's What mode of metabolism can use anaerobic and aerobic respiration? A) Microaerophiles B) Obligate anaerobes C) Obligate aerobes D) Facultative anaerobes
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ABC's JW Which type of fermentation produces CO2?
A) Lactic Acid Fermentation B) Alcoholic Fermentation C) Fermentation D) Respiration
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ABC's JW What compound is needed for Lactic Acid Fermentation to return to Glycolysis? A) NADP+ B) NADPH C) NAD+ D) NADH
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Overview How Prokaryotic cells obtain energy
Hoe Eukaryotic cells obtain energy How Prokaryotic cells release energy How Eukaryotic cells convert energy Different types of fermentation Products resulted from fermentation
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