Learning Guide: Origins of Life

Learning Guide: Cellular Respiration Bill Activity #28A To Think About: How do living things produce and use energy to survive in an ecosystem? In what ways do living things create matter to survive in an ecosystem? How do communities interact within their environments that result in the movement of matter and energy?

1st Interact: Watch Mr. Andersen’s Video on Cellular Respiration and take notes.

2nd Read and Record Key Terms/ Explain: Cellular Respiration and Fermentation Pgs. 163-183 Campbell’s Biology 9th edition Here is a list of key terms and concepts you will hear about and see during the lecture, podcast and chapter reading. Create a 2 column note structure to list the terms and definitions/information for each one. (They are listed vertically in order of the processes involved, color code the three processes/associated terms as we did with the note packet) Key Terms NAD/NADH Cytochromes Obligate anaerobes Aerobic respiration Substrate-level Chemiosmosis Facultative anaerobes phosphorylation Cellular respiration Glycolysis ATP synthase Cellular respiration eq. Oxidation of Pyruvate Proton motive force to Acetyl coA Redox reactions Citric acid cycle Fermentation Oxidation Oxidative Alcoholic fermentation phosphorylation Reduction Electron transport chain Lactic acid fermentation Explain 1. The process of glycolysis does not require oxygen in order to occur. Explain what this tells us about the evolutionary history of this metabolic process. 2. In the absence of oxygen, fermentation occurs. Explain the primary purpose of this process. 3. Identify the source of the electrons that travel down the electron transport chain. Explain why oxygen is the final electron acceptor in aerobic cellular respiration. 4. Create a graphic organizer that illustrates the reactants and products for each of the major stages of cellular respiration: (a) Glycolysis (b) Krebs Cycle (c) Oxidative phosphorylation 5. Compare and contrast chemiosmosis that takes place in the mitochondria to produce ATP to the osmosis of water that can occur in a cell. 6. Carbohydrates are the primary energy source for many cells, but proteins and lipids can also be used. Describe where these alternative energy sources enter the process of cell respiration.

Supplementary Resources: Click the links below for more information to help you learn more about this lesson.  Hillis et al.:Electron Transport and ATP Synthesis animated tutorial  Hillis et al.:Glycolysis and Fermentation tutorial  Hillis et al.: Photophosphorylation  Sumanas, Inc.: Cellular Respiration Animation  Virtual Cell Animation: Glycolysis, Step by Step  PHSchool.com: Cellular Respiration Animation

Learn More: For more information about metabolism, use the links below:  John Kyrk: Glycolysis Animation  John Kyrk: Oxidative Phosphorylation Animation  John Kyrk: Krebs Cycle Animation