Guided Reading Chapter 6 In chapter five we were introduced to ATP We saw that cells use the chemical energy stored in ATP to do work Here in chapter six we learn how ATP is generated 1 What is cellular respiration and where does it occur in a eukaryotic cell 2 What do cellular respiration and breathing have in common 3 Overall is cellular respiration endergonic or an exergonic Explain why Use the words energy ATP glucose 4 True or False ATP is synthesized using energy that your cells harvest from the food that you consume 5 Define oxidation and give an example of a molecule that undergoes oxidation during cellular respiration 6 Define reduction and give and example of a molecule that undergoes reduction during cellular respiration 7 Figure 6 5C depicts the electron transport chain In this simple cartoon which molecule is the electron donor Electron acceptor 8 In your own words describe BRIEFLY the 3 stages of cellular respiration 9 Chemical energy is harvested from glucose during glycolysis in the form of both ATP and NADH but glycolysis also consumes energy Why is energy consumed in the initial stages of glycolysis 10 Glycolysis generates a 2 ATP 2 NADH and 2 molecules of pyruvate per glucose molecule Once pyruvate has formed at the end of glycolysis does it go directly into the citric acid cycle If not what happens 11 What is the goal of the citric acid cycle In other words why is the oxidation of organic molecules necessary during cellular respiration Think about the products generated in the citric acid cycle and how these are used in the production of ATP 12 Why do two turns of the citric acid cycle occur per glucose molecule 13 The final stage of cellular respiration is oxidative phosphorylation In your own words provide a brief description of what happens during oxidative phosphorylation 14 As electrons move down the electron transport chain how is the energy harvested from NADH and FADH2 used 15 Why are carriers used to transport hydrogen ions across the inner mitochondrial membrane 16 How is the hydrogen ion gradient used to drive the synthesis of 32 ATP per glucose molecule 17 What is the role of oxygen in the electron transport chain 18 Can energy be harvested in the absence of oxygen 19 Can fermentation support life 20 Differentiate between lactic acid fermentation and alcohol fermentation 21 What happens to all of those intermediate organic molecules made during cellular respiration 22 Not all of the glucose molecules in our cells are used to generate ATP Predict what might happen to the glucose that is not used up during cellular respiration
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