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Cellular Respiration

Cellular Respiration. Cellular Respiration. Who? All eukaryotic cells Purpose? Convert food (such as glucose) into ATP 1 glucose = 36 ATP Aerobic process: reaction requires O 2 Exothermic reaction: reaction that releases heat. Step 1: Glycolysis. Mitochondrion.

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Cellular Respiration

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  1. Cellular Respiration

  2. Cellular Respiration • Who? All eukaryotic cells • Purpose? Convert food (such as glucose) into ATP • 1 glucose = 36 ATP • Aerobic process: reaction requires O2 • Exothermic reaction: reaction that releases heat

  3. Step 1: Glycolysis Mitochondrion • Where? In the cell’s cytoplasm • What happens? A) Glucose (from our food) is broken down B) 2 ATP molecules released for cellular processes C) Broken pieces of glucose (pyruvate) enter mitochondrion Glucose C6H12O6 C C ATP ATP C C En-zyme C C C C C

  4. Step 2: Kreb’s Cycle ATP ATP Mitochondrion En-zyme • Where? The matrix (fluid enclosed by inner membrane) • What happens? A) Enzymes break apart the glucose fragments B) 2 ATP & CO2 created C) Energy molecules sent to inner mitochondrion membrane CO2 C ATP C CO2 CO2 C Energy molecule ATP C CO2 CO2 C En-zyme C CO2

  5. Step 3: Electron Transport Chain ATP ATP ATP Mitochondrion P O2 En-zyme ADP ATP O2 ATP ATP ATP • Where? Inner mitochondrion membrane • What happens? • Mitochondrion takes in oxygen (aerobic) • Enzymes + Energy molecule + O2 bonds ADP + P to create…. Up to 34 ATP molecules C) O2 bonds with H left over from energy molecule • H2O created as waste Energy molecule ATP H2O H2O H2O H2O ADP P ADP O2 P P O2 ADP O2

  6. Review • Which molecule is the energy molecule of cells? • Which types of organisms perform cellular respiration? • Where does glycolysis occur? • What is broken down during glycolysis? • What is created as a result of glycolysis? • Where is aerobic respiration performed? • Name the 2 stages of respiration that take place in the mitochondria. • Which waste gas is created by the Kreb’s cycle? • What molecule is created as a waste by the “ETC”? • How many ATP molecules are made during glycolysis? • How many ATP molecules are made during Kreb’s cycle? • How many ATP molecules are made during “ETC”? • How many ATP molecules are made in total?

  7. Review Answers ATP Eukaryotes • Which molecule is the energy molecule of cells? • Which types of organisms perform cellular respiration? • Where does glycolysis occur? • What is broken down during glycolysis? • What is created as a result of glycolysis? • Where is aerobic respiration performed? • Name the 2 stages of respiration that take place in the mitochondria. • Which waste gas is created by the Kreb’s cycle? • What molecule is created as a waste by the “ETC”? • How many ATP molecules are made during glycolysis? • How many ATP molecules are made during Kreb’s cycle? • How many ATP molecules are made during Electron transport chain? • How many ATP molecules are made in total? Cell’s cytoplasm Glucose 2 ATP and 2 3-carbon molecules (pyruvate) Mitochondria The Kreb’s Cycle & The Electron Transport Chain CO2 H2O 2 ATP 2 ATP Up to 34 ATP molecules Up to 38 ATP molecules

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