Aerobic Respiration
42 Questions
1 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the main reason cells with abundant oxygen prefer aerobic respiration over anaerobic respiration?

  • Faster process
  • Reduced CO2 production
  • Lower oxygen availability
  • Higher ATP production (correct)

    • Which organelle is responsible for converting pyruvate into acetyl CoA if oxygen is present?

  • Golgi apparatus
  • Endoplasmic reticulum
  • Mitochondria (correct)
  • Nucleus

    • What is the byproduct of the electron transport chain in aerobic respiration?

  • ATP
  • Water (correct)
  • Glucose
  • Carbon dioxide

    • What role does the ATP synthase enzyme play in aerobic respiration?

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

    Which molecule is produced during the conversion of pyruvate into acetyl CoA in aerobic respiration?

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

    What is the main function of the Krebs Cycle in aerobic respiration?

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

    Aerobic respiration starts with glycolysis in the mitochondria.

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

    The Krebs Cycle produces FADH3 as one of its outputs.

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

    In aerobic respiration, pyruvate is converted into acetyl CoA in the cytoplasm.

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

    The electron transport chain in aerobic respiration occurs in the outer mitochondrial membrane.

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

    ATP production in aerobic respiration mainly occurs during glycolysis.

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

    Oxygen is used as an electron donor in the electron transport chain during aerobic respiration.

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

    Cells with abundant oxygen prefer aerobic respiration over anaerobic respiration due to the higher ______ production.

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

    Aerobic respiration starts with glycolysis in the ______, converting glucose into pyruvate and yielding NADH and ATP.

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

    If oxygen is present, pyruvate is transported to the mitochondria to be converted into acetyl CoA for the ______ Cycle.

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

    The conversion of pyruvate to acetyl CoA involves losing a carbon as CO2 and a redox reaction producing ______.

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

    In the Krebs Cycle, acetyl-CoA generates carbon dioxide waste, NADH, FADH2, and ______ equivalents.

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

    The electron transport chain in the inner mitochondrial membrane uses NADH and FADH2 to produce ATP through oxidative ______.

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

    Match the following components with their roles in aerobic respiration:

    <p>NADH = Carries electrons to the electron transport chain for ATP production FADH2 = Also carries electrons to the electron transport chain for ATP production Acetyl CoA = Generated from pyruvate and enters the Krebs Cycle ATP synthase enzyme = Facilitates ATP production by allowing hydrogen ions to flow back into the matrix</p> Signup and view all the answers

    Match the following statements with the correct descriptions in aerobic respiration:

    <p>Glycolysis = Initial process converting glucose into pyruvate with ATP and NADH production Krebs Cycle = Involves generation of carbon dioxide, NADH, FADH2, and ATP equivalents Electron transport chain = Uses NADH and FADH2 to produce ATP through oxidative phosphorylation Oxidative phosphorylation = Process of ATP production through electron transport chain and ATP synthase enzyme</p> Signup and view all the answers

    Match the following molecules with their roles in aerobic respiration:

    <p>Pyruvate = Converted to acetyl CoA if oxygen is present Carbon dioxide = Produced as waste in both the Krebs Cycle and conversion of pyruvate to acetyl CoA Water = Formed as a byproduct when oxygen acts as an electron acceptor in the electron transport chain Hydrogen ions = Flow back into the matrix through ATP synthase enzyme, aiding in ATP production</p> Signup and view all the answers

    Match the following processes with their locations in aerobic respiration:

    <p>Glycolysis = Occurs in the cytoplasm converting glucose into pyruvate Conversion of pyruvate to acetyl CoA = Takes place in the mitochondria when oxygen is present Krebs Cycle = Happens in the mitochondria generating NADH, FADH2, and ATP equivalents Electron transport chain = Located in the inner mitochondrial membrane for ATP production</p> Signup and view all the answers

    Match the following terms with their definitions in aerobic respiration:

    <p>Anaerobic respiration = Occurs when oxygen levels are low, leading to fermentation instead of complete oxidation Oxidative phosphorylation = Final stage of aerobic respiration where most ATP is produced Aerobic respiration = Process utilizing oxygen for complete glucose breakdown and high ATP yield Fermentation = Alternative pathway when oxygen is scarce, leading to lower ATP production</p> Signup and view all the answers

    Match the following outcomes with their processes in aerobic respiration:

    <p>Higher ATP production = Characteristic that makes cells with abundant oxygen prefer aerobic respiration over anaerobic respiration Generation of NADH and FADH2 = Occurs during both glycolysis and Krebs Cycle for electron transport chain usage Formation of acetyl CoA from pyruvate = Necessary step when oxygen is present before entering the Krebs Cycle Bulk of ATP production = Mainly achieved during oxidative phosphorylation by utilizing NADH and FADH2</p> Signup and view all the answers

    What is the main purpose of oxidative phosphorylation in cells?

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

    Which enzyme is responsible for the synthesis of ATP using the proton motive force?

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

    What is the function of the electron transport chain in oxidative phosphorylation?

    <p>Generate high-energy electrons</p> Signup and view all the answers

    Which of the following complexes is NOT part of the electron transport chain in oxidative phosphorylation?

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

    What is the role of the proton motive force in oxidative phosphorylation?

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

    In oxidative phosphorylation, where do hydrogen ions move during the electron transport chain?

    <p>From the matrix to the intermembrane space</p> Signup and view all the answers

    Which component of ATP synthase is responsible for generating ATP during oxidative phosphorylation?

    <p>(Fo) catalytic unit</p> Signup and view all the answers

    What is the primary function of complexes I, III, and IV in the electron transport chain?

    <p>Transfer electrons</p> Signup and view all the answers

    Which organelle is primarily responsible for oxidative phosphorylation in cells?

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

    What drives the rotation of the central stalk in the F1 complex of mitochondria during oxidative phosphorylation?

    <p>Movement of protons</p> Signup and view all the answers

    How does TNFa affect the electron transport chain in mitochondria during oxidative phosphorylation?

    <p>Increases proton gradient dissipation</p> Signup and view all the answers

    Which molecules activate phosphofructokinase to prevent glucose entry into glycolysis in the regulation of oxidative phosphorylation?

    <p>Palmitoyl-CoA and Oleoyl-CoA</p> Signup and view all the answers

    What happens to the activity of H+-ATPase in mitochondria when cellular ATP levels decrease?

    <p>It is activated</p> Signup and view all the answers

    During oxidative phosphorylation, what role do ADP and Pi play in the F1 complex of mitochondria?

    <p>Bind to beta subunits</p> Signup and view all the answers

    What is the main regulatory mechanism that controls the rate of ATP production through oxidative phosphorylation based on cellular energy needs?

    <p>Negative feedback</p> Signup and view all the answers

    In oxidative phosphorylation, what leads to increased ATP production via substrate-level phosphorylation?

    <p>Uncoupling electron transport from phosphorylation</p> Signup and view all the answers

    How do fatty acids like palmitoyl-CoA and oleoyl-CoA impact glucose metabolism in the context of oxidative phosphorylation?

    <p>Prevent glucose entry into glycolysis</p> Signup and view all the answers

    What is the effect of increased demand or decreased supply of ATP on the H+-ATPase in mitochondria?

    <p>It increases H+-ATPase activity</p> Signup and view all the answers

    Study Notes

    • Cells with abundant oxygen prefer aerobic respiration over anaerobic respiration due to the higher ATP production.
    • Aerobic respiration starts with glycolysis in the cytoplasm, converting glucose into pyruvate and yielding NADH and ATP.
    • If oxygen is present, pyruvate is transported to the mitochondria to be converted into acetyl CoA for the Krebs Cycle.
    • The conversion of pyruvate to acetyl CoA involves losing a carbon as CO2 and a redox reaction producing NADH.
    • In the Krebs Cycle, acetyl-CoA generates carbon dioxide waste, NADH, FADH2, and ATP equivalents.
    • The electron transport chain in the inner mitochondrial membrane uses NADH and FADH2 to produce ATP through oxidative phosphorylation.
    • Oxygen acts as an electron acceptor in the electron transport chain, forming water as a byproduct.
    • ATP synthase enzyme facilitates ATP production as hydrogen ions move back into the matrix through the enzyme, generating the bulk of ATP in aerobic respiration.

    Studying That Suits You

    Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

    Quiz Team

    Description

    Test your knowledge on the process of aerobic respiration, from glycolysis to oxidative phosphorylation in mitochondria, and how ATP is generated. Understand the roles of pyruvate, acetyl CoA, NADH, FADH2, and the electron transport chain in energy production.

    More Like This

    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser