5The basic Steps of Cellular Respiration Step 1: Glycolysis (anerobic)Step 2: Krebs Cycle (aerobic)Step 3: Electron Transport Chain(aerobic)
6Cellular respiration occurs in two main parts. Aerobic RespirationGlycolysisAnaerobic Respiration
7Let’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?
10Do Now Where does glycolysis take place? What is the total net gain of ATP from glycolysis?(P.S We’re changing seats today! Yay!)
11Do Now1. 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?
12Do NowWhat 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?
13BUT WHY MUST WE BREATHE IN OXYGEN GAS???? Sooo….Why do we breathe oxygen??? We take in oxygen as other forms. Ex. water (H20).BUT WHY MUST WE BREATHE IN OXYGEN GAS????
14Do Now What happens when we don’t get enough oxygen? What does our body do?
15ObjectivesSWBAT compare and contrast alcohol fermentation and lactic acid fermentation.SWBAT design an experiment to try to maximize the amount CO2 produced from fermentation.
16Stand up! Move your arm up and down for three minutes! Do not stop until the time is up!?What is happening in your arm?
17Biological 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.
18What is the difference? Anaerobic - Does not require Oxygen Aerobic - Does require Oxygen
19Lactic Acid Fermentation Physical conditioning allows your body to adapt to increased activityThe body can increase its ability to deliver oxygen to musclesLong-distance runners wait until the final sprint to exceed their aerobic capacity
20Lactic Acid Fermentation Lactic acid is associated with the “burn” associated with heavy exerciseIf too much lactic acid builds up, your muscles give out
21Lactic Acid Fermentation Inputs:2 Pyruvates, 2 NADHOutputs:2 lactic acid, 2 NAD+Ex:Bacteria that help in making yogurt.Human muscle cells when out of oxygen.
22Anaerobic Respiration Yeast, People, Bacteria, FungusMaking ATP without oxygenUsed to make beer, wine, and bread
23Bread and Alcoholic Beverages Use YeastCarbon dioxide is produced and ethanol
25Why don’t you get drunk off bread? Take a minute and pair up with the person sitting NEXT to you and discuss this question.
26Aerobic vs. Anaerobic Respiration IF“Aerobic”MitochondriaCell MembraneTPGlycolysisGlucose2 Pyruvic Acid“Anaerobic”If NO02
27Do Now Why do your muscles burn after you exercise? Do we do anaerobic or aerobic respiration?What are the differences between the two?
28Lab – Alcohol Fermentation of Yeast Yeast – have a mitochondria and can perform aerobic respiration as well.Yeast – do anaerobic respiration (alcohol Fermentation)Outputs: CO2, ATP, and EthanolSucrose= glucose and fructoseFeedback Inhibition- too much of product stops the reactionYeast- used for bread, and alcoholic beverages
29Do Now What is light? What are the different forms of light? What is the kind of light we can see?
30Do Now – Label the area this happens 1. Photosynthesis Cholorplast2. Cellular respiration Mitochondria3. Glucose Carbon dioxide4. Oxygen
31ObjectivesSWBAT compare and contrast cellular respiration and photosynthesisSWBAT answer questions to help them review for their upcoming test.