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Understanding Cell Respiration: Key Concepts and Processes

Learn about the role of electron carriers, types of respiration, energy forms, and important structures involved in cellular respiration. Discover the phases, anaerobic processes, and comparison with photosynthesis.

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Understanding Cell Respiration: Key Concepts and Processes

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  1. 8.3 READ Qs 1-IDENTIFY In the Kreb’s cycle what is pyruvate converted to? 2- IDENTIFY: Complete the figure by writing the location of each stage of cell respiration -carbon dioxide -cytoplasm -mitochondria -mitochondria membrane

  2. 8.3 READ Qs 3-DEFINE What 2 processes make up anaerobic respiration? 4- CLASSIFY What type of organisms have cells that carry out all of the process shown? -glycolysis -fermentation -plants [autotrophs]

  3. 8.3 CELLULAR RESPIRATION WHAT YOU WILL LEARN: -the role of electron carriers in cellular respiration -the difference between alcoholic fermentation and lactic-acid fermentation "Cell Respiration"

  4. MAIN IDEA -Living organisms obtain energy breaking down organic compounds during cellular respiration

  5. OVERVIEW of CELLULAR RESPIRATION -FUNCTION of cellular respiration— makes ENERGY for cells LIST organisms that carry out CELLULAR RESPIRATION? - plants / animals / prokaryotes LIST the organelle where cellular respiration takes place ---mitochondria IDENTIFY the chemical equation for cell respiration: -C6H12O6 + 6O2 6CO2 + 6H2O + energy

  6. OVERVIEW of CELLULAR RESPIRATION IDENTIFY energy form used during cell respiration chemciallight mechanical IDENTIFY energy form produced during cell respiration chemciallight mechanical DETERMINE total energy produced during cell resp-- -ATP = __________ -NADH+ = __________ cellular respiration (SUGAR GOES TO ATP) ~36 ~10

  7. IMPORTANT STRUCTURES of CELL RESP HOW CELLS OBTAIN ENERGY http://www.youtube.com/watch?v=i8c5JcnFaJ0

  8. PHASES of CELLULAR RESPIRATION -2 ATP net -2 NADH+ cytoplasm glucosepyruvate -2 ATP net -8 NADH+ pyruvateCO2 mitochondria mitochondrial membrane e- + H+ + O2 H2O + ATP ~32 ATP net ~36-38 ATP net ~10 NADH+

  9. CELLULAR RESPIRATION Photosynthesis and Respiration - YouTube

  10. ANAEROBIC RESPIRATION-NO O2  CAUSE: CELLS CAN’T GET ENOUGH OXYGEN FERMENTATION FOLLOWS: GLYCOLYSIS IT REPLACES: KREB’S CYCLE AND ELECTRON TRANSPORT FERMENTATION IS NEEDED TO REPLENISH SUPPLY OF NAD+ FOR GLYCOLYSIS 2 ATP

  11. STEP 1-GLYCOLYSIS breaks down glucose Occurs in cytoplasm of cells anaerobic process—NO O2 needed needs 2 ATP molecules to start • EACH GLUCOSE MOLECULE NETS: 2 ATP molecules 2 NADH 2 molecules of pyruvate

  12. STEP 2-KREB’S CYCLE breaks down pyruvate-- forms CO2 Occurs in mitochondria of cell aerobic process—requires O2 • EACH MOLECULE GLUCOSE PRODUCES: 2 ATP 8 NADH 4 CO2

  13. STEP 3-ELECTRON TRANSPORT ATP made from high-energy electrons & protons Occurs in mitochondrial membrane aerobic process—requires O2 • EACH GLUCOSE MOLECULE PRODUCES: 32 ATP electrons & protons w/O2 make H2O

  14. ANAEROBIC RESPIRATION-FERMENTATIONNO O2 present-- LACTIC ACID FERMENTATION -produced in muscles during strenuous exercise—not enough O2 -lactic acid produced by many microorganisms -used in making yogurt, sour cream, cheese ALCOHOL FERMENTATION -used in making beer & wine/bread -occurs in organisms such as bacteria/yeast

  15. CELLULAR RESPIRATION

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