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Study Guide: Cell Respiration

To-Do Date: Feb 8 at 12:00pm

Cartoon

In this cartoon a molecule (NADH) is trying to hold on to a bunch of electrons, but some are slipping away. What is NADH supposed to do with all of these electrons? Where are they coming from and where are they going? 

nadh-electron-panic_orig.png

 

Learning Objectives

By the end of next week, you should be able to: 

    • Explain the importance of chemical energy for living organisms- the role of organic molecules and ATP
    • Explain the point of doing cellular respiration
    • What is the overall reaction equation for cellular respiration?
      • where do the reactants come from?
      • where do the products go?
    • Draw the places in the cell where each stage of cellular respiration occurs and label the place and the stage 
    • For each stage of cellular respiration: 
      • what's the name of the stage?
      • what goes in? (reactants)
      • what comes Links to an external site. out (products)
      • what's the purpose? (why are these products important?)
      • where does this stage happen within a cell?
      • Understand what is the source of energy to  build the proton (H+) gradient. 
      • Explain how the H+ concentration gradient is used to help generate ATP.
      • What is oxygen’s job in the electron transport chain? **don’t say “to make ATP” – that’s ATP synthase’s job.Electron Transport Chain: 

Study Guide Questions: Metacognition

Some of these questions will be used for your the short answer portion of your exam. The others will be converted into multiple choice questions.  

1.  Fill in this chart:

Cellular Respiration Stages
Name of the stage What goes in (reactants)? What comes out? (products) What's the purpose? (why are the products important?) Where does it happen within a cell?

 

5. Write out the overall equation for Cellular Respiration: The reactants on the left side of the arrow and products on the right side. Note: if something is produced in glycolysis, but used up in the ETC and recycled, it shouldn't be put into this overall equation (ie NADH).  

6.  After several minutes without oxygen, most people will pass out. If they go without oxygen for 4-6 minutes, a person can have brain damage. Use your knowledge of cellular respiration and ATP to explain why this is the case.  Make sure to include the following vocabulary: ATP, work in cells (such as the work of conducting nerve impulses or muscle contraction), oxygen, electron transport chain, ATP synthase, NADH, Citric Acid Cycle, Glycolysis. 

PowerPoint Slides