23 Jul WHAT DO THESE MOLECULES DO AFTER THEY HAVE DROPPED OF THE ELECTRONS?
In other words what molecu Show more Glucose is oxidized during glycolysis. What molecule has been reduced? In other words what molecule collects the electrons (reduced) that have been stripped off of the glucose molecule (oxidized)? 2. . Describe how pyruvic acid a three carbon molecule (each of the two that was derived from glycolysis) becomes acetyl CoA. 3. . Describe the electron transport chain in the mitochondrial membrane by answering the following questions: a) What molecules drop off electrons onto the chain? b) Where did these molecules get their electrons that they drop off in the ETS? c) What do these molecules do after they have dropped of the electrons? 4. What happens to the electrons once they have entered the electron transport system? e) What molecule picks up the electrons at the end of the chain? f) What does that molecule become after it picks up the electrons? 5.How is the above (question 4 an example of a redox reaction? What is the movement of electrons from molecule to molecule? Is that an exergonic or endergonic reaction? What is the energy generated by this reaction used for? Now that there is a H+ gradient across the mitochondrial membrane what happens to H+ that causes ATP to be formed? How many ATP are formed by one glucose molecule? Use the masteringbio website. Go to chapter 9. Click on study area and then activities in the menu of options on the left side of your screen. Choose the Electron Transport System activity. This is an overview of the process. What has watching this added to your knowledge of ETS? What is the function (the end goal) of cellular respiration? What will happen if there is no oxygen in a cell? Can a cell still make ATP to do work? There are two ways that cells can make ATP if no oxygen is present. Discuss them here (alcohol fermentation and lactic acid fermentation). Show less
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