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Ch 6 Sum: Cellular respiration
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Ch 6 Sum: Cellular respiration

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Questions and Answers

Where does glycolysis take place?

  • Cytoplasm (correct)
  • Endoplasmic reticulum
  • Nucleus
  • Mitochondria

    • How many molecules of pyruvate are produced from one glucose molecule in glycolysis?

  • Three
  • Two (correct)
  • One
  • Four

    • Which stage of cellular respiration converts glucose into pyruvate?

  • Anaerobic respiration
  • Krebs cycle
  • Oxidative phosphorylation
  • Glycolysis (correct)

    • What is the net gain of ATP molecules per glucose molecule in glycolysis?

    <p>Two</p> Signup and view all the answers

    Which cellular component is responsible for glycolysis?

    <p>None of the above</p> Signup and view all the answers

    What is the primary purpose of aerobic respiration?

    <p>Produce adenosine triphosphate (ATP)</p> Signup and view all the answers

    Which type of respiration is more efficient: aerobic or anaerobic?

    <p>Aerobic respiration</p> Signup and view all the answers

    What are the three main stages of aerobic respiration?

    <p>Glycolysis, Krebs cycle, oxidative phosphorylation</p> Signup and view all the answers

    What is the final product of glycolysis?

    <p>Pyruvate</p> Signup and view all the answers

    Which organelle is mainly involved in oxidative phosphorylation?

    <p>Mitochondrion</p> Signup and view all the answers

    What is the expected outcome of the setup with live seeds in a sealed container with a substance to absorb CO2?

    <p>The CO2 indicator turning cloudy</p> Signup and view all the answers

    What serves as a control in the investigation to demonstrate the utilization of oxygen during cellular respiration?

    <p>Killed beans</p> Signup and view all the answers

    What does a glowing splint in the experimental tube indicate in the investigation on oxygen utilization?

    <p>It dies out</p> Signup and view all the answers

    What remains clear or unchanged in a test tube in the investigation on aerobic respiration with a snail?

    <p>Lime water</p> Signup and view all the answers

    How is oxygen removed before conducting the investigation on anaerobic respiration?

    <p>Boiling the solution</p> Signup and view all the answers

    What turns milky in the test tubes to indicate the production of CO2 during anaerobic respiration?

    <p>Lime water</p> Signup and view all the answers

    Which setup demonstrates the absence of respiration?

    <p>Control setup with boiled seeds</p> Signup and view all the answers

    What is the purpose of setting up test tubes with germinating and killed beans in the investigation on oxygen utilization?

    <p>To show difference in oxygen consumption</p> Signup and view all the answers

    What is the indicator of aerobic respiration in the presence of a snail?

    <p>Milky water</p> Signup and view all the answers

    Which organism is used in the investigation on anaerobic respiration?

    <p>Yeast</p> Signup and view all the answers

    Where does the Krebs cycle take place?

    <p>Mitochondrial matrix</p> Signup and view all the answers

    What is the end product of the Krebs cycle?

    <p>Carbon dioxide</p> Signup and view all the answers

    Which stage of cellular respiration produces the most ATP per glucose molecule?

    <p>Oxidative phosphorylation</p> Signup and view all the answers

    In anaerobic respiration, what is the substance that accumulates and leads to muscle fatigue?

    <p>Lactic acid</p> Signup and view all the answers

    What is the energy-rich molecule that carries high-energy electrons in cellular respiration?

    <p>NADH</p> Signup and view all the answers

    Where does anaerobic respiration occur in muscle cells during intense exercise?

    <p>Cytoplasm</p> Signup and view all the answers

    What is the primary role of cellular respiration?

    <p>To produce ATP</p> Signup and view all the answers

    How many ATP molecules are produced per glucose molecule in aerobic respiration?

    <p>Approximately 38</p> Signup and view all the answers

    Which location is specifically mentioned for the aerobic respiration processes?

    <p>Mitochondria</p> Signup and view all the answers

    What process allows glycolysis to continue by regenerating NAD+ from NADH?

    <p>Lactic acid fermentation</p> Signup and view all the answers

    Which stage of cellular respiration mainly involves the conversion of glucose into pyruvate?

    <p>Glycolysis</p> Signup and view all the answers

    Where does Glycolysis take place in the cell?

    <p>Cytoplasm</p> Signup and view all the answers

    Which molecule is produced in both the aerobic and anaerobic respiration processes?

    <p>Pyruvate</p> Signup and view all the answers

    What is the net gain of ATP molecules per glucose molecule in glycolysis?

    <p>2 ATP</p> Signup and view all the answers

    The Krebs Cycle is also known as the ___ Cycle.

    <p>Citric Acid</p> Signup and view all the answers

    Which process in cellular respiration primarily requires oxygen?

    <p>Oxidative Phosphorylation</p> Signup and view all the answers

    What is the primary waste product released during cellular respiration?

    <p>Carbon Dioxide</p> Signup and view all the answers

    Which stage of aerobic respiration is the most ATP produced?

    <p>Oxidative Phosphorylation</p> Signup and view all the answers

    What is the primary function of Cellular Respiration in cells?

    <p>ATP Production</p> Signup and view all the answers

    How many NADH molecules are produced per glucose molecule in Glycolysis?

    <p>2</p> Signup and view all the answers

    During intense exercise, muscle cells switch from aerobic to anaerobic respiration. Which of the following is a correct chemical equation representing anaerobic respiration in muscle cells?

    <pre><code>ext{Pyruvate} </code></pre> <p>ightarrow ext{Ethanol} + ext{CO}_2 + ext{ATP}</p> Signup and view all the answers

    What is the primary end product of anaerobic respiration in animals such as humans?

    <p>Lactic Acid</p> Signup and view all the answers

    Which stage of cellular respiration is responsible for pumping protons across the mitochondrial membrane to create a proton gradient?

    <p>Electron Transport Chain</p> Signup and view all the answers

    In terms of ATP production, what makes aerobic respiration significantly more efficient than anaerobic processes?

    <p>Generation of more ATP molecules</p> Signup and view all the answers

    Where does anaerobic glycolysis occur within the cell?

    <p>Cytoplasm</p> Signup and view all the answers

    During which process of cellular respiration are high-energy electrons carried by carriers such as NADH and FADH2?

    <p>Krebs Cycle</p> Signup and view all the answers

    What is the primary function of cellular respiration with regard to ATP production?

    <p>Generation of ATP</p> Signup and view all the answers

    Which location specifically within the cell is involved in oxidative phosphorylation?

    <p>Inner Mitochondrial Membrane</p> Signup and view all the answers

    What causes muscle fatigue and soreness due to anaerobic respiration?

    <p>Accumulation of lactic acid</p> Signup and view all the answers

    How does the total ATP yield of aerobic respiration compare to anaerobic respiration per glucose molecule?

    <p>Aerobic respiration is slightly more efficient in ATP production than anaerobic respiration</p> Signup and view all the answers

    What is the purpose of setting up test tubes with germinating and killed beans in the investigation on oxygen utilization?

    <p>To compare oxygen consumption between living and non-living beans</p> Signup and view all the answers

    What is the main purpose of using a substance to absorb CO2 in the setup with germinating seeds?

    <p>To measure the amount of carbon dioxide produced</p> Signup and view all the answers

    What does the milky appearance of lime water in test tube D, in the investigation on aerobic respiration, indicate?

    <p>Production of carbon dioxide by the snail</p> Signup and view all the answers

    Why is it important to set up a control with boiled seeds in the investigation on oxygen utilization?

    <p>To demonstrate that germinating seeds require oxygen</p> Signup and view all the answers

    What is the significance of inserting a glowing splint into each test tube in the investigation on oxygen utilization?

    <p>To test for the presence of oxygen in the setup</p> Signup and view all the answers

    In the investigation on carbon dioxide production during aerobic respiration, why is the removal of oxygen from the sugar solution important before setting up the apparatus?

    <p>To create anaerobic conditions for respiration observations</p> Signup and view all the answers

    Why is it crucial to sterilize the equipment before conducting an investigation on anaerobic respiration?

    <p>To prevent contamination by unwanted organisms</p> Signup and view all the answers

    What is the purpose of observing the test tubes containing yeast and sugar solution after a few hours in the investigation on anaerobic respiration?

    <p>To detect the presence of carbon dioxide in the setup</p> Signup and view all the answers

    What makes the lime water turn milky in the investigation on anaerobic respiration?

    <p>The production of carbon dioxide by yeast</p> Signup and view all the answers

    Why is using germinating seeds in the investigation on oxygen utilization important for demonstrating cellular respiration?

    <p>To show the utilization of oxygen by living seeds</p> Signup and view all the answers

    What is the purpose of aerobic respiration?

    <p>Produce energy from organic molecules using oxygen</p> Signup and view all the answers

    How many ATP molecules are net gained per glucose molecule in glycolysis?

    <p>Two</p> Signup and view all the answers

    Where does the Krebs cycle (Citric Acid Cycle) occur?

    <p>Mitochondria</p> Signup and view all the answers

    Which molecules are produced during glycolysis?

    <p>Pyruvate and CO2</p> Signup and view all the answers

    What is the end product of oxidative phosphorylation?

    <p>ATP</p> Signup and view all the answers

    Why is aerobic respiration considered more efficient than anaerobic respiration?

    <p>It generates more ATP per glucose molecule</p> Signup and view all the answers

    In what cellular location does glycolysis take place?

    <p>Cytoplasm</p> Signup and view all the answers

    What is the main function of cellular respiration with regard to ATP production?

    <p>Producing ATP</p> Signup and view all the answers

    Which stage of aerobic respiration involves the conversion of glucose into pyruvate?

    <p>Glycolysis</p> Signup and view all the answers

    What is the main waste product released during cellular respiration?

    <p>Carbon dioxide</p> Signup and view all the answers

    What happens to muscle cells during intense exercise that leads to the production of lactic acid?

    <p>They switch from aerobic to anaerobic respiration.</p> Signup and view all the answers

    In the context of respiration, why is it necessary for NAD+ to be regenerated?

    <p>To allow glycolysis to continue producing ATP.</p> Signup and view all the answers

    What is the primary difference between aerobic and anaerobic respiration in terms of ATP production?

    <p>Aerobic respiration results in a higher ATP yield per glucose molecule.</p> Signup and view all the answers

    What is the main consequence of the accumulation of lactic acid in muscle cells?

    <p>Muscle fatigue and soreness.</p> Signup and view all the answers

    Which stage of cellular respiration is primarily responsible for the synthesis of ATP through chemiosmosis?

    <p>Oxidative Phosphorylation</p> Signup and view all the answers

    Which location within the cell is specifically mentioned in the context of aerobic respiration?

    <p>Mitochondria</p> Signup and view all the answers

    What is the primary role of anaerobic respiration in muscle cells during intense exercise?

    <p>To maintain ATP production when oxygen is limited.</p> Signup and view all the answers

    What is the main end product of anaerobic respiration in yeast?

    <p>Ethanol</p> Signup and view all the answers

    What is the primary significance of aerobic respiration over anaerobic processes in terms of efficiency?

    <p>Aerobic respiration yields more energy per glucose molecule.</p> Signup and view all the answers

    Which aspect distinguishes the end products of aerobic and anaerobic respiration processes?

    <p>Formation of lactic acid</p> Signup and view all the answers

    Which aspect of cellular respiration is demonstrated by the setup with germinating seeds in a sealed container?

    <p>Utilization of oxygen</p> Signup and view all the answers

    In the investigation on oxygen utilization, why is it important to seal the test tubes containing germinating beans?

    <p>To establish anaerobic conditions</p> Signup and view all the answers

    In aerobic respiration, what indicates the removal of carbon dioxide in the setup with lime water and a snail?

    <p>Lime water turning clear</p> Signup and view all the answers

    What purpose does using a sugar solution with yeast serve in the investigation on anaerobic respiration?

    <p>Creating anaerobic conditions for respiration</p> Signup and view all the answers

    During the investigation on oxygen utilization, why does the glowing splint die out in the test tube with germinating beans?

    <p>Inhibition of oxygen utilization</p> Signup and view all the answers

    What is the significance of observing the test tubes containing lime water and organisms in investigations on respiration?

    <p>To visualize production or removal of carbon dioxide</p> Signup and view all the answers

    Which conclusion can be drawn from the investigation on anaerobic respiration regarding carbon dioxide production?

    <p>Living cells produce carbon dioxide during anaerobic respiration</p> Signup and view all the answers

    What is the primary explanation for the difference in the lime water's appearance between test tube B and test tube D in the investigation on aerobic respiration?

    <p>Carbon dioxide produced by the organisms</p> Signup and view all the answers

    Why does the glowing splint ignite or burn brighter in the control tube in the investigation on oxygen utilization?

    <p>Increased oxygen concentration</p> Signup and view all the answers

    What role does setting up the control with boiled beans serve in the investigation on oxygen utilization?

    <p>Establishing that germinating beans respire</p> Signup and view all the answers

    What is the total ATP yield per glucose molecule in aerobic respiration?

    <p>38 ATP</p> Signup and view all the answers

    Which process occurs in the mitochondrial matrix?

    <p>Krebs Cycle</p> Signup and view all the answers

    What is the primary role of anaerobic respiration in muscle cells during intense exercise?

    <p>Regenerating NAD+</p> Signup and view all the answers

    Where does the process of chemiosmosis occur?

    <p>Inner Mitochondrial Membrane</p> Signup and view all the answers

    What is the end product of anaerobic respiration in muscle cells?

    <p>Lactic Acid</p> Signup and view all the answers

    Which stage of cellular respiration involves the oxidation of pyruvate into acetyl CoA?

    <p>Krebs Cycle</p> Signup and view all the answers

    What is the main purpose of the electron transport chain during cellular respiration?

    <p>Creation of ATP</p> Signup and view all the answers

    Where does the conversion of glucose into Lactic Acid occur during anaerobic respiration?

    <p>Cytoplasm</p> Signup and view all the answers

    Which product allows dough to rise in the process of bread making?

    <p>Carbon Dioxide</p> Signup and view all the answers

    What is the energy carrier molecule that plays a critical role in aerobic respiration?

    <p>NADH</p> Signup and view all the answers

    What is the main purpose of cellular respiration in organisms?

    <p>To convert biochemical energy into ATP</p> Signup and view all the answers

    In which cellular location does glycolysis take place during cellular respiration?

    <p>Cytoplasm</p> Signup and view all the answers

    How many ATP molecules are produced per glucose molecule during glycolysis?

    <p>Two ATP molecules</p> Signup and view all the answers

    Which stage of aerobic respiration is responsible for the synthesis of ATP through chemiosmosis?

    <p>Oxidative Phosphorylation</p> Signup and view all the answers

    What is the primary function of the Krebs Cycle (Citric Acid Cycle) in cellular respiration?

    <p>To produce CO2 and high-energy electrons</p> Signup and view all the answers

    Which process involves the conversion of one molecule of glucose into two pyruvate molecules?

    <p>Glycolysis</p> Signup and view all the answers

    What is the primary difference between aerobic and anaerobic respiration?

    <p>The requirement of oxygen</p> Signup and view all the answers

    During which process of cellular respiration is carbon dioxide mainly produced?

    <p>Krebs Cycle</p> Signup and view all the answers

    What is the outcome of the conversion of glucose into pyruvate in cellular respiration?

    <p>Gain of ATP and NADH</p> Signup and view all the answers

    Which stage of cellular respiration directly involves the production of NADH and ATP molecules?

    <p>Krebs Cycle</p> Signup and view all the answers

    What purpose does the test tube with germinating beans serve in the investigation on oxygen utilization?

    <p>To show oxygen utilization during cellular respiration by living organisms</p> Signup and view all the answers

    In the investigation on carbon dioxide production during aerobic respiration, what indicates the removal of carbon dioxide from the test tube?

    <p>The lime water turning clear</p> Signup and view all the answers

    What is the significance of inserting a glowing splint into the experimental tube in the investigation on oxygen utilization?

    <p>To test for the presence of carbon dioxide</p> Signup and view all the answers

    During anaerobic respiration, why does the lime water turn milky in the test tubes with yeast and sugar solution?

    <p>Because of carbon dioxide produced by anaerobic respiration</p> Signup and view all the answers

    What is the expected outcome of setting up the test tubes with germinating beans and killed beans in the investigation on oxygen utilization?

    <p>The experimental tube will show respiration while the control will not</p> Signup and view all the answers

    What is the role of sterilizing the equipment before conducting an investigation on anaerobic respiration?

    <p>To maintain a sterile environment for accurate results</p> Signup and view all the answers

    Which observation indicates the requirement for anaerobic conditions in the investigation on carbon dioxide production?

    <p>The requirement to use a sealed container</p> Signup and view all the answers

    Why is setting up a control with boiled beans important in the investigation on oxygen utilization?

    <p>To halt cellular respiration in the control setup</p> Signup and view all the answers

    What conclusion can be drawn from the lime water turning milky in the test tube with yeast and sugar in the investigation on anaerobic respiration?

    <p>Anaerobic respiration produces carbon dioxide</p> Signup and view all the answers

    What does the observation of the glowing splint in the experimental tube illustrate in the investigation on oxygen utilization?

    <p>The utilization of oxygen in the experimental setup</p> Signup and view all the answers

    Where does the Krebs cycle take place?

    <p>Mitochondrial matrix</p> Signup and view all the answers

    What is the primary end product of anaerobic respiration in muscle cells?

    <p>Lactic acid</p> Signup and view all the answers

    In anaerobic respiration in yeast, what is the primary end product?

    <p>Carbon dioxide</p> Signup and view all the answers

    What is the main difference between aerobic and anaerobic respiration in terms of ATP yield per glucose molecule?

    <p>Aerobic yields 38 ATP, while anaerobic yields 2 ATP</p> Signup and view all the answers

    What is the location of aerobic processes in cellular respiration?

    <p>Mitochondrial matrix</p> Signup and view all the answers

    What is the primary significance of aerobic respiration over anaerobic processes in terms of efficiency?

    <p>Aerobic respiration is significantly more efficient in yielding energy per glucose molecule</p> Signup and view all the answers

    Where does glycolysis take place?

    <p>Cytoplasm</p> Signup and view all the answers

    Which stage of cellular respiration produces a net gain of two ATP molecules and two NADH molecules per glucose molecule?

    <p>Glycolysis</p> Signup and view all the answers

    What is the primary function of aerobic respiration in cells?

    <p>Produce Energy from Organic Molecules</p> Signup and view all the answers

    What is the primary difference between aerobic and anaerobic respiration in terms of ATP production?

    <p>Aerobic respiration produces more ATP</p> Signup and view all the answers

    During which stage of aerobic respiration does oxidative phosphorylation occur?

    <p>Mitochondria</p> Signup and view all the answers

    What is the key outcome of the conversion of glucose into pyruvate in cellular respiration?

    <p>Release of ATP</p> Signup and view all the answers

    What is the main aim of the investigation on anaerobic respiration?

    <p>To examine the production of carbon dioxide in the absence of oxygen</p> Signup and view all the answers

    Why does the lime water turn milky in the test tube with yeast and sugar solution in the investigation on anaerobic respiration?

    <p>As an indicator of carbon dioxide production</p> Signup and view all the answers

    Why is it necessary to conduct the investigation on oxygen utilization with both germinating and killed beans?

    <p>To demonstrate oxygen consumption during respiration</p> Signup and view all the answers

    In the investigation on cellular respiration, why is it essential to sterilize the equipment?

    <p>To prevent contamination by microorganisms</p> Signup and view all the answers

    What is the significance of the glowing splint dying out in the experimental test tube during the investigation on oxygen utilization?

    <p>It demonstrates the utilization of oxygen</p> Signup and view all the answers

    What is the primary function of lime water in the setup for investigating carbon dioxide production during respiration?

    <p>To detect carbon dioxide release</p> Signup and view all the answers

    What is the expected outcome of the setup with test tubes containing lime water in the investigation on carbon dioxide production?

    <p>Turn clear due to CO2 removal</p> Signup and view all the answers

    What is the main conclusion that can be drawn from the investigation on cellular respiration's oxygen utilization?

    <p>Oxygen consumption occurs during respiration</p> Signup and view all the answers

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