ࡱ> ^`]y bjbj 74{{Nff8 4@4NttNNNNNNN$ PRn=N=NRNrrrFNrNrr[JXLnFK(NhN0NK,S`,SPLLP,SMr=t#=N=NrN,Sf : How Do Cells Obtain Energy? Summary: This is a PowerPoint Presentation meant to introduce students to the process of cellular respiration. It covers both aerobic respiration and anaerobic respiration in plant and animal cells. Keywords: cellular respiration, aerobic, anaerobic, Krebs cycle, glycolysis, fermentation. Subject TEKS: Science: 7.12 (F) Recognize that according to cell theory all organisms are composed of cells and cells carry on similar functions such as extracting energy from food to sustain life Grade Level: 7th grade Learning Objectives: The student will: Understand the difference between anaerobic and aerobic respiration Recognize the different respiration steps for each process Distinguish between energy production with oxygen and without oxygen Describe the breakdown of pyruvate in the respiration process Time Required: about 30 minutes Materials: HDCOE PowerPoint Reusable Activity Cost Per Group [in dollars]: $0.00 Expendable Activity Cost Per Group [in dollars]: $0.00 Background and Concepts for Teachers: Teachers should review cited websites and have a basic knowledge of both photosynthesis and cellular respiration. Coverage of cellular organelles beforehand with students will also be beneficial to understanding of topic Vocabulary / Definitions: ATP = adenosine triphosphate, the energy currency of the cell Glucose = simple sugar used in most cell processes Cristae = folds in the mitochondrial matrix, contain the carries of the electron transport system Electron carriers NAD+= functions in cellular respiration by carrying two electrons from on reaction site to another NADH = reduced form of NAD+, the proton H+ was released FADH2 = brings electrons to the electron transport system Lesson Introduction / Motivation: Have students recall the photosynthesis process where plants breathe in carbon dioxide and release oxygen, ask them where they think that carbon dioxide comes from (who is producing the CO2 as an end product)? Ask students if they have ever had sore muscles, and inform them that this is caused by lactic acid buildup, a process that occurs in cellular respiration. Presentation/Explanation: The PowerPoint Presentation made for this lesson covers the reaction formula for respiration, and defines the two different forms of respiration (anaerobic and aerobic). The steps for each type of process are covered separately. Within the presentation are check points that summarize/quiz students on what has been presented so far. Lesson Closure: The end of the PowerPoint has a brief overview of the respiration process. Assessment/Evaluation: Checkpoints are incorporated into the PowerPoint Presentation to see if students have understood the material up to each stopping point. Teachers may use the overall checkpoint questions for a quiz grade. Safety Issues: None Resources: Introductory Video on Aerobic Respiration  HYPERLINK "http://www.sumanasinc.com/webcontent/animations/content/cellularrespiration.html" http://www.sumanasinc.com/webcontent/animations/content/cellularrespiration.html Video on Electron Transport Chain  HYPERLINK "http://www.sci.uidaho.edu/bionet/biol115/t4_energy/flash/etc.htm" http://www.sci.uidaho.edu/bionet/biol115/t4_energy/flash/etc.htm Cells R Us  HYPERLINK "http://peer.tamu.edu/curriculum_modules/Cell_Biology/Module_3/whatweknow.htm" http://peer.tamu.edu/curriculum_modules/Cell_Biology/Module_3/whatweknow.htm References:  HYPERLINK "http://www.elmhurst.edu/~bio/renee/bio100/Chapter%208.pdf" http://www.elmhurst.edu/~bio/renee/bio100/Chapter%208.pdf  HYPERLINK "http://www.nclark.net/icon_word.gif" http://www.nclark.net/icon_word.gif  HYPERLINK "http://courtneystanifer.edublogs.org/" http://courtneystanifer.edublogs.org/  HYPERLINK "http://facweb.bhc.edu/academics/science/robertsk/biol100/cellularenergy.htm" http://facweb.bhc.edu/academics/science/robertsk/biol100/cellularenergy.htm Authors: Undergraduate Fellow Name: Grace Bell  Please email us your comments on this lesson: E-mail to  HYPERLINK "mailto:ljohnson@cvm.tamu.edu" ljohnson@cvm.tamu.edu Please include the title of the lesson, whether you are a teacher or college faculty and what grade you used it for.      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