Cellular respiration
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Cellular respiration

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    Cellular respiration Cellular respiration Presentation Transcript

    • Review Game I hope you studied!
    • Mitochondria
        • WHERE
        • MOST ENERGY
        • IS PRODUCED
        • IN CELLULAR
        • RESPIRATION
    • Mitochondrial disease
      • Results from failure of the mitochondria
      • Mitochondria are responsible for 90% of the energy needed by the body to sustain life
      • Cell fails - tissue fail - organ fail - death
      • SYMPTOMS: motor control, muscle weakness and pain, gastro-intestinal disorders and swallowing difficulties, poor growth, cardiac disease, liver disease, diabetes, respiratory complications, seizures, visual/hearing problems, lactic acidosis, developmental delays and susceptibility to infection
    • Cellular Respiration Cellular respiration vs Photosynthesis The energy from the mitochondria is produced in a processes called:
    • Yeast Lab
      • Yeast are small organisms that use sugar to make energy.
      • Follow the procedure in your notes. Make sure you make observations about what is going on.
      • Later in class you will be able to make a inference about where the air in the balloon is coming from
    • Cellular respiration
      • What is it?
        • Cellular Respiration – process that produces energy by breaking down glucose and other food molecules in the presence of oxygen .
        • MAIN POINT:
          • GLUCOSE (an organic molecule) ATP (a form of energy the body can use)
    • Who performs Cellular Respiration?
      • EVERY LIVING THING!!
        • Animals, plants, fungi…anything that is living.
        • Every living thing needs to convert sugars into energy so they all perform RESPIRATION.
      • PLANTS & ANIMALS PERFORM CELLULAR RESPIRATION
      • PLANTS & ANIMALS PERFORM CELLULAR RESPIRATION
      • PLANTS & ANIMALS PERFORM CELLULAR RESPIRATION
    • Location, location, location
      • Cellular Respiration occurs mainly in the mitochondria of cells & in the cytoplasm.
      • Why do you think the mitochondria have so many folds?
    • The break down
      • cellular respiration is broken down into 3 parts.
        • Glycolysis - Cytoplasm
        • Krebs Cycle - Mitochondria
        • Electron Transport Chain – Mitochondria
      • Each of the steps of cellular respiration produces a different amount of ATP.
    • Step 1 Glycolysis
      • Glycolysis – process in which one molecule of glucose is broken in half
        • Produces:
          • 2molecules of pyruvic acid
          • 2 Molecules of ATP
      • Glyco= Made of Sugar
      • Lysis= To cut
    • Name depends on Oxygen
      • If Oxygen is present (aerobic)
        • Cellular respiration
      • If Oxygen is absent (which is?)
        • Fermentation
    • Step Two: If oxygen is present
      • Krebs Cycle
        • Pyruvic acid CO2
      • Location- Inside the mitochondria
      • 6 Molecules of ATP are produced.
        • CO2 is waste
    • If Oxygen is present step 3
      • The Electron Transport Chain
        • uses high energy electrons to convert many ADP to ATP .
      • Waste: H2O
      • Most ATP is produced!!!!
        • 36 ATP
    • Cytoplasm Mitochondria Matrix Mitochondria inner membrane 2 (Net) 6 28 2 Pyrivic Acid 6 CO 2 6 H 2 O Overview of the steps/ATP Production and Waste Step Location ATP Produced Products Glycolysis Krebs Cycle ETC
    • If no oxygen is present FERMENTATION
    • Fermentation
      • Fermentation – process by which cells release energy (ATP) from food molecules in the absence of oxygen .
        • Anaerobic – “not in air”; no oxygen.
        • Does NOT need mitochondria either
        • Glycolysis still has to happen first! (just like in cellular respiration. )
      • 2 types of fermentation:
      • Alcoholic and Lactic Acid Fermentation
      • Glycose Lactic Acid
    • Alcoholic Fermentation
      • Yeast and a few other microorganisms use alcoholic fermentation.
      • Forms alcohol and CO 2 as wastes.
      • Sore?
      • Your muscles run out of oxygen so cells begin rapidly producing ATP by lactic acid fermentation.
      • The build up of acid causes a burning sensation.
      • You breath heavily after exercise to repay the oxygen dept .
    • Photosynthesis and Cellular Respiration are OPPOSITES of each other
      • Plants take in CO2 and give off O2 and Animals take in O2 and give off CO2.
    • The Relationship of Cellular Respiration and Photosynthesis
      • Plants ( autotrophs ) use BOTH processes
      • Animals ( heterotrophs ) only use ONE process; cellular respiration.
    • Photosynthesis and Cellular Respiration are OPPOSITES of each other
      • The products of photosynthesis are the reactants for cellular respiration and the products of cellular respiration are the reactants for photosynthesis