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Cell Resp overview2017.notebook January 09, 2017 Staple take‐home quiz to digestion activity and turn in‐ THEN QOD: 1/6/17 Write down any organism on this list that uses the process of respiration: human tomato plant chick inside egg apple tree grass mushroom worm amoeba duck fish horse bacteria frogeggs human body cell germinating seed honeybee Explain your thinking. How did you decide whether an organism uses the process of respiration? Pair with your partner and share your thought processes Apr 2312:40 PM Put the following in your TOC An Overview of Cellular Respiration Learning Target: I can explain how the energy in food is converted to energy my body can use for work Feb 52:23 PM 1 Cell Resp overview2017.notebook January 09, 2017 Evidence Collection: 1. You have read two Essays on pp. 362367 and completed the chart. This was your prework (I will collect and stamp glue in science notebook when returned) 2. In pairs, get laptop and complete the tutorials. Follow the directions and record on your paper as you go once tutorials are done, you are done for today. Use Internet Explorer Check battery before starting For #11e: Another name for the Kreb's cycle is Citric Acid Cycle STOP when you get to Analysis (unless you want to get ahead for Monday) Feb 52:28 PM Do Now 1/9/17 If a statement is FALSE, write the correction as well 1. T/F Your cells can use energy from the foods you eat directly after digestion 2. T/F ATP stands for adenosine triphosphate 3. T/F chemical bonds represent kinetic energy 4. T/F Glycolysis alone produces enough ATP for all organisms 5. T/F An anaerobic process requires oxygen Feb 912:59 PM 2 Cell Resp overview2017.notebook January 09, 2017 Do Now: 1/9/17 If a statement is FALSE, write the correction as well 1. T/F Your cells can use energy from the foods you eat directly after digestion Falsemust be converted to chemical energy 2. T/F ATP stands for adenosine triphosphate True 3. T/F chemical bonds represent kinetic energy False potential energy 4. T/F Glycolysis alone produces enough ATP for all organisms False only enough for one celled organisms 5. T/F An anaerobic process requires oxygen False does not require oxygen Feb 912:59 PM Do Now #2: 1/9/17 What goes in the blanks? Discuss with partner. Discussion only do not have to record (this is review) Where is the energy stored in the ATP molecule? Mar 298:23 AM 3 Cell Resp overview2017.notebook January 09, 2017 Whiteboard questions: answer w/partner 1. Stored energy is called energy, while the energy of motion is called energy. 2. The energy in must be converted to the energy in the molecule before cells can use it. Mar 78:55 AM Whiteboard questions: answer w/partner 1. Stored energy is called potential energy, while the energy of motion is called kinetic energy. 2. The energy in food must be converted to the energy in the molecule ATP before cells can use it. Mar 78:55 AM 4 Cell Resp overview2017.notebook January 09, 2017 Cellular Respiration RedPen Revision in notebook or on chart only add what you need!! Living things, from bacteria to humans, use similar pathways one of these is: Cellular Respiration: process of enzymes converting the energy in macromolecules (foods like starch or glycogen) or smaller molecules (like glucose) into usable form (ATP) So what does ATP stand for? Apr 234:55 PM ATP adenosine triphosphate Feb 411:15 AM 5 Cell Resp overview2017.notebook January 09, 2017 Why do we need it again? ATP ADP + Phosphate + ENERGY Energy is released for cell activity (muscle contraction, nerve impulse, active transport, dehydration synthesis,....) But, not very efficient "lose" 90% in HEAT Energy + ADP + Phosphate ATP A reversible reaction! Where does the energy come from? An example of ATP in action... Feb 411:19 AM proteins Muscle Contraction covers actin binding sites ATP at work! 3 protein complex ions + Ca2+ unlocks actin binding sites and contraction occurs adenosine diphosphate adenosine triphosphate = + phospate + energy Feb 411:18 AM 6 Cell Resp overview2017.notebook January 09, 2017 To get all this ATP (and it is A LOT!!!) almost all living things follow the cellular respiration pathway and it goes something like this..... Feb 411:27 AM What molecule do we need to start Cellular Respiration? Glucose Sugar Sweet Outputs C6H12O6 + 6O2 6CO2 + 6 H2O + energy Inputs Cellular Respiration Heat 38 ATP 3 Stages Apr 268:00 PM 7 Cell Resp overview2017.notebook January 09, 2017 Whiteboard questions: answer w/partner 3. The first stage of cellular respiration is glycolysis. It occurs in the and produces ATP molecules. 4. Fill in the blanks in the following equation: ADP + energy Mar 78:57 AM Whiteboard questions: answer w/partner 3. The first stage of cellular respiration is glycolysis. It occurs in the cytoplasm and produces 2 net ATP molecules. 4. Fill in the blanks in the following equation: ATP ADP + P energy Mar 78:57 AM 8 Cell Resp overview2017.notebook January 09, 2017 Process goes through 3 stages: Stage 1 p. 364 Glycolysis Breaking down of Glucose anaerobic (no O2 reqired) occurs in cytoplasm C1C2C3C4C5C6 ENERGY as 4 ATP (net gain 2 ATP) If no O2 then Fermentation occurs Apr 234:59 PM Whiteboard questions: answer w/partner 5. After glycolysis, pyruvate can have 2 fates (or enter 2 pathways.) What are they? Pyruvate 6. What determines which pathway pyruvate takes? Mar 79:51 AM 9 Cell Resp overview2017.notebook January 09, 2017 Whiteboard questions: answer w/partner 5. After glycolysis, pyruvate can have 2 fates (or enter 2 pathways.) What are they? Pyruvate Fermentation Respiration alcoholic or lactic acid (lactate) 6. What determines which pathway pyruvate takes? presence of oxygen Mar 79:51 AM If O2 present we go to? STEP 2: p. 365 Kreb's cycle C1C2C3 x 2 occurs in mitochondria most CO2 produced here C1C2 2 ATP Electron/Hydrogen carriers Apr 235:08 PM 10 Cell Resp overview2017.notebook January 09, 2017 http://www.nclark.net/ElectronTransportChain.mp3 Step 3: p. 366 Electron Transport System (ETS) Electron/Hydrogen carriers creates most ATP O2 final electron acceptor ETS e and H+ and O H2O + 34 ATP energy of electrons is converted into the energy in chemical bonds via chemiosmosis and enzymes Apr 235:20 PM Whiteboard questions: answer w/partner 7. Which stage of cellular respiration produces the most ATP? Glycolysis, Kreb's cycle, or electron transport system? 8. Where in your body do these processes take place? Choose the best response from the choices below: B. A. C. Mar 79:53 AM 11 Cell Resp overview2017.notebook January 09, 2017 Whiteboard questions: answer w/partner 7. Which stage of cellular respiration produces the most ATP? Glycolysis, Kreb's cycle, or electron transport system? 8. Where in your body do these processes take place? Choose the best response from the choices below: B. A. C. Mar 79:53 AM What controls rate of ATP production? More ATP ADP signals more energy use, so as ADP respiration rate increases Negative feedback! Also controlled by O2 levels if enough is present to meet energy demands = aerobic respiration If not = anaerobic energy production is needed Apr 235:31 PM 12 Cell Resp overview2017.notebook January 09, 2017 In humans, we call this lactic acid fermentation p. 368 GLYCOLYSIS 2 ATP (net) PYRUVATE LACTIC ACID C1C2C3 C1C2C3 Lactic acid can be converted back to glucose by liver and other cells, but this process only gives 2 ATP/Glucose Used to supplement aerobic respiration, will not support humans (or anything much larger than 1 cell) on its own Apr 235:36 PM 13