OBJECTIVES SWBAT define Riboflavin and Niacin. SWBAT identify the inputs and outputs of glycolysis.
NADH AND FADH 2 FADH 2 (Riboflavin) FADH 2 FAD + 2 H + + 2e- B 2 Vitamin Accepts 2 electrons NADH (Niacin) NADH NAD + + H + + 2e- B 3 Vitamin Accepts 2 electrons
THE BASIC STEPS OF CELLULAR RESPIRATION Step 1: Glycolysis (anerobic) Step 2: Krebs Cycle (aerobic) Step 3: Electron Transport Chain (aerobic)
CELLULAR RESPIRATION OCCURS IN TWO MAIN PARTS. Glycolysis Aerobic Respiration Anaerobic Respiration
LET’S TRY SOME SAMPLE MATH PROBLEMS BEFORE WE BEGIN Spongebob Squarepants is selling Krabby Patties. He spends $2 to make each one, and is selling them for $7 dollars each. How much NET profit is Spongebob making if he sells 1 Krabby Pattie? 10 Krabby Patties?
DO NOW Where does glycolysis take place? What is the total net gain of ATP from glycolysis? (P.S We’re changing seats today! Yay!)
DO NOW 1. If 28 ATP were made in glycolysis, how many glucose molecules were consumed? 2. Where does the carbon in carbon dioxide come from? 3. In glycolysis, if 18 NADH are produced, how many ATP are produced? How many glucose molecules are consumed? How many Pyruvate molecules are produced?
DO NOW What happens to the carbons in Pyruvate during the Kreb’s Cycle? Where does the Kreb’s Cycle take place? What are the NET total outputs for the Kreb’s Cycle? Why are they twice as much as the total outputs?
SOOO…. Why do we breathe oxygen??? We take in oxygen as other forms. Ex. water (H20). BUT WHY MUST WE BREATHE IN OXYGEN GAS????
DO NOW What happens when we don’t get enough oxygen? What does our body do?
OBJECTIVES SWBAT compare and contrast alcohol fermentation and lactic acid fermentation. SWBAT design an experiment to try to maximize the amount CO 2 produced from fermentation.
STAND UP! Move your arm up and down for three minutes! Do not stop until the time is up!? What is happening in your arm?
BIOLOGICAL PROCESSES REQUIRE… ENERGY Moving your arms, like other biological processes, requires energy. The energy needed is provided by the breakdown of sugars in food to form ATP (cellular respiration) CR requires Oxygen, but after some time cells are unable to provide the needed amount of oxygen, and lactic acid fermentation occurs. When lactic acid builds up, the muscles feel sore and fatigued.
WHAT IS THE DIFFERENCE? Anaerobic - Does not require Oxygen Aerobic - Does require Oxygen
LACTIC ACID FERMENTATION Physical conditioning allows your body to adapt to increased activity Physical conditioning allows your body to adapt to increased activity –The body can increase its ability to deliver oxygen to muscles Long-distance runners wait until the final sprint to exceed their aerobic capacity Long-distance runners wait until the final sprint to exceed their aerobic capacity
LACTIC ACID FERMENTATION Lactic acid is associated with the “burn” associated with heavy exercise If too much lactic acid builds up, your muscles give out
LACTIC ACID FERMENTATION Inputs: 2 Pyruvates, 2 NADH Outputs: 2 lactic acid, 2 NAD+ Ex: Bacteria that help in making yogurt. Human muscle cells when out of oxygen.
ANAEROBIC RESPIRATION Yeast, People, Bacteria, Fungus Making ATP without oxygen Used to make beer, wine, and bread
BREAD AND ALCOHOLIC BEVERAGES Use Yeast Carbon dioxide is produced and ethanol http://www.microbiologybytes.com/video/Scerevisiae.html
ALCOHOL FERMENTATION Inputs: 2 Pyruvates, 2 NADH Outputs: 2 ethanol, 2 CO 2, 2 NAD+ Ex: Yeast in wine and beer production.
WHY DON’T YOU GET DRUNK OFF BREAD? Take a minute and pair up with the person sitting NEXT to you and discuss this question.
AEROBIC VS. ANAEROBIC RESPIRATION Glycolysis 2 Pyruvic Acid Glucose Cell Membrane TP O2O2 IF “Aerobic” Mitochondria “Anaerobic” If NO0202
DO NOW Why do your muscles burn after you exercise? Do we do anaerobic or aerobic respiration? What are the differences between the two?
LAB – ALCOHOL FERMENTATION OF YEAST Yeast – have a mitochondria and can perform aerobic respiration as well. Yeast – do anaerobic respiration (alcohol Fermentation) Outputs: CO 2, ATP, and Ethanol Sucrose= glucose and fructose Feedback Inhibition- too much of product stops the reaction Yeast- used for bread, and alcoholic beverages
DO NOW What is light? What are the different forms of light? What is the kind of light we can see?
DO NOW – LABEL THE AREA THIS HAPPENS 1. Photosynthesis 5. Cholorplast 2. Cellular respiration 6. Mitochondria 3. Glucose 7. Carbon dioxide 4. Oxygen
OBJECTIVES SWBAT compare and contrast cellular respiration and photosynthesis SWBAT answer questions to help them review for their upcoming test.