Anaerobic Respiration (Lactic Acid Fermentation)
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Questions and Answers

During anaerobic respiration in humans, what is the purpose of converting pyruvate to lactic acid?

  • To inhibit ATP production
  • To produce more glucose
  • To regenerate NAD+ for glycolysis (correct)
  • To generate more NADH
  • Where does lactic acid produced during anaerobic respiration in muscle cells go next?

  • Exported to the blood (correct)
  • Transported to the lungs
  • Converted into glycogen
  • Stored in muscle cells for future use
  • What is the final destination of lactic acid transported in the blood during anaerobic respiration?

  • Liver (correct)
  • Kidneys
  • Heart
  • Brain
  • Which molecule is involved in the oxidation process during the conversion of pyruvate to lactic acid?

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

    What is the main energy-producing process that occurs during anaerobic respiration in humans?

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

    During anaerobic respiration, glucose is broken down into two pyruvate molecules through glycolysis.

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

    The conversion of pyruvate to lactic acid occurs in a multi-step process.

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

    The purpose of converting pyruvate to lactic acid is to ensure the continuation of NADH production.

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

    Lactic acid produced during anaerobic respiration remains within muscle cells and does not enter the blood.

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

    The liver converts lactic acid back into glucose through a process known as glycolysis.

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

    Anaerobic respiration in humans, also known as lactic acid fermentation, occurs in the absence of ______, particularly during intense workouts or when oxygen is not readily available to tissues.

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

    The process of anaerobic respiration involves glycolysis, where glucose is broken down into two pyruvate molecules, generating a small amount of ATP and ______.

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

    Pyruvate is converted into lactic acid in a single step process, involving the oxidation of NADH and the reduction of pyruvate to regenerate ______.

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

    The purpose of converting pyruvate to lactic acid is to regenerate NAD+ to ensure the continuation of glycolysis and ______ production.

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

    Lactic acid produced during anaerobic respiration is exported from muscle cells to the blood, where it is transported to the liver for conversion back into glucose through gluconeogenesis, a process unique to the liver known as the ______ Cycle.

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

    Match the following molecules with their role in anaerobic respiration:

    <p>Pyruvate = Converted into lactic acid NADH = Oxidized during conversion of pyruvate to lactic acid NAD+ = Regenerated by the conversion of pyruvate to lactic acid Lactic acid = Exported from muscle cells to the blood</p> Signup and view all the answers

    Match the following processes with their occurrence during anaerobic respiration:

    <p>Glycolysis = Breaks down glucose into two pyruvate molecules Lactic acid fermentation = Conversion of pyruvate to lactic acid Gluconeogenesis = Conversion of lactic acid back into glucose in the liver Cori Cycle = Transportation of lactic acid from muscle cells to the liver for conversion</p> Signup and view all the answers

    Match the following terms with their significance in anaerobic respiration:

    <p>ATP = Generated in small amounts during glycolysis Anaerobic respiration = Occurs in the absence of oxygen Oxidation = Involves NADH during conversion of pyruvate to lactic acid Regeneration = Process needed to ensure continuation of glycolysis and ATP production</p> Signup and view all the answers

    Match the following locations with their involvement in anaerobic respiration:

    <p>Muscle cells = Export lactic acid produced during anaerobic respiration Blood = Transport lactic acid to the liver for gluconeogenesis Liver = Converts lactic acid back into glucose through gluconeogenesis Tissues = Experience anaerobic respiration when oxygen is not readily available</p> Signup and view all the answers

    Match the following statements with their accuracy in relation to anaerobic respiration:

    <p>Lactic acid fermentation occurs in the absence of oxygen = True Glycolysis results in the generation of a large amount of ATP = False Pyruvate is directly converted into glucose in muscle cells = False The Cori Cycle involves transportation of glucose from liver to muscle cells = False</p> Signup and view all the answers

    Study Notes

    • Anaerobic respiration in humans, also known as lactic acid fermentation, occurs in the absence of oxygen, particularly during intense workouts or when oxygen is not readily available to tissues.
    • The process involves glycolysis, where glucose is broken down into two pyruvate molecules, generating a small amount of ATP and NADH.
    • Pyruvate is then converted into lactic acid in a single step process, involving the oxidation of NADH and the reduction of pyruvate to regenerate NAD+.
    • The purpose of converting pyruvate to lactic acid is to regenerate NAD+ to ensure the continuation of glycolysis and ATP production.
    • Lactic acid produced during anaerobic respiration is exported from muscle cells to the blood, where it is transported to the liver for conversion back into glucose through gluconeogenesis, a process unique to the liver known as the Cori Cycle.

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    Description

    Explore the process of anaerobic respiration, also known as lactic acid fermentation, in humans. Learn how the conversion of pyruvate to lactic acid helps regenerate NAD+ to sustain glycolysis and ATP production. Discover how lactic acid is transported to the liver for conversion back into glucose through the Cori Cycle.

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