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    Anaerobic Respiration

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    iyaan fameeb
    1) Muscle cramps occur after heavy exercise due to lactic acid buildup from anaerobic respiration. During intense exercise, the body produces energy through anaerobic respiration when oxygen levels are insufficient for aerobic respiration. 2) Anaerobic respiration is the incomplete breakdown of glucose without oxygen, producing lactic acid and a small amount of energy. It is a temporary process that occurs in cells. 3) The lactic acid produced is poisonous to muscles and causes fatigue. This is why the heart and breathing rates remain elevated after exercise - to replenish oxygen levels needed to break down the lactic acid.

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    Anaerobic Respiration

    Uploaded by

    iyaan fameeb
    96 views14 pages
    1) Muscle cramps occur after heavy exercise due to lactic acid buildup from anaerobic respiration. During intense exercise, the body produces energy through anaerobic respiration when oxygen levels are insufficient for aerobic respiration. 2) Anaerobic respiration is the incomplete breakdown of glucose without oxygen, producing lactic acid and a small amount of energy. It is a temporary process that occurs in cells. 3) The lactic acid produced is poisonous to muscles and causes fatigue. This is why the heart and breathing rates remain elevated after exercise - to replenish oxygen levels needed to break down the lactic acid.

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    Anaerobic-Respiration

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    1) Muscle cramps occur after heavy exercise due to lactic acid buildup from anaerobic respiration. During intense exercise, the body produces energy through anaerobic respiration when oxygen levels are insufficient for aerobic respiration. 2) Anaerobic respiration is the incomplete breakdown of glucose without oxygen, producing lactic acid and a small amount of energy. It is a temporary process that occurs in cells. 3) The lactic acid produced is poisonous to muscles and causes fatigue. This is why the heart and breathing rates remain elevated after exercise - to replenish oxygen levels needed to break down the lactic acid.

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    © All Rights Reserved
    Download as PPTX, PDF, TXT or read online from Scribd
    Download as pptx, pdf, or txt
    96 views14 pages

    Anaerobic Respiration

    Uploaded by

    iyaan fameeb
    1) Muscle cramps occur after heavy exercise due to lactic acid buildup from anaerobic respiration. During intense exercise, the body produces energy through anaerobic respiration when oxygen levels are insufficient for aerobic respiration. 2) Anaerobic respiration is the incomplete breakdown of glucose without oxygen, producing lactic acid and a small amount of energy. It is a temporary process that occurs in cells. 3) The lactic acid produced is poisonous to muscles and causes fatigue. This is why the heart and breathing rates remain elevated after exercise - to replenish oxygen levels needed to break down the lactic acid.

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    You are on page 1of 14

    14/10/2023

    Why do we feel muscle cramps


    after heavy exercise?
    Anaerobic Respiration

    Learning Objectives:
    To explore the concept of anaerobic respiration.

    Success Criteria :
    I can give reason for muscle fatigue in the body.
    I can describe the difference between aerobic and anaerobic
    respiration
    Lack of Oxygen – Aerobic Respiration

    Glucose + O2  H2O + CO2 + Energy

    “If the body is not able to supply enough oxygen, aerobic


    respiration cannot take place and energy is not released!”
    Where do we get energy from in such a
    situation?
    • The body still has a
    supply of glucose.

    • The body can harness


    some energy from the
    glucose without oxygen.

    • A by-product called
    lactic acid is produced.
    Anaerobic
    What do you think Anaerobic means?

    “Anaerobic = Without Oxygen”

    O2
    Anaerobic Respiration
    • The incomplete breakdown of
    glucose.

    • Releases less energy than aerobic


    respiration.

    • Temporary process.
    Anaerobic Respiration Equation

    Glucose  Lactic Acid + Energy


    Where does this occur?
    Cells
    Why would we get muscle cramps?

    Glucose  Lactic Acid + Energy

    • Lactic acid is poisonous to


    muscles.
    • It stops them contracting
    and relaxing.
    • They become fatigued.
    Why do we require more oxygen after
    a strenuous exercise?
    During hard exercise when anaerobic respiration
    occurs with aerobic respiration, an oxygen debt builds
    up.

    This is now known as Excess Post-exercise Oxygen


    Consumption or EPOC.

    The build up of lactic acid that occurs during exercise


    needs breaking down. In order for the body to do this
    oxygen is needed.
    Oxygen debt (EPOC)

    Anaerobic respiration
    Glucose  Lactic Acid + Energy

    Lactic acid needs to be broken down by oxygen to allow


    muscles to return to normal
    Lactic acid + oxygen carbon dioxide + water
    So why does our heart and breathing rate
    remain high after exercise?
    Anaerobic respiration produces an oxygen debt.

    This is the amount of oxygen needed to oxidise lactic acid to


    carbon dioxide and water.

    Or to convert lactic acid back to glucose, in the liver.

    The existence of an oxygen debt explains why we continue to


    breathe deeply and quickly for a while after exercise.
    Plenary
    Copy table into book and place the statements into the correct column.

    Aerobic Respiration Anaerobic Respiration Both


    Glucose + Oxygen  Glucose  Lactic Acid + Energy
    Water + Carbon dioxide + Energy

    Requires glucose Produces lactic acid Produces energy

    Happens in cells Happens for short periods


    Creates an oxygen debt Produces carbon dioxide
    requires oxygen
    Plenary - Answers
    Copy table into book and place the statements into the correct column.

    Aerobic Respiration Anaerobic Respiration Both


    Glucose + Oxygen  Glucose  Lactic Acid + Energy
    Water + Carbon dioxide + Energy

    Produces carbon dioxide Produces lactic acid Requires glucose


    Requires oxygen Happens for short Produces energy
    periods
    Creates oxygen debt Happens in cells
    Why do we begin to respire Why do we get stitch
    Write the word equation for
    anaerobic respiration (1 point)
    anaerobically? when we run? (3 points)
    (2 marks)

    Explain what is meant by


    the “oxygen debt” Where does the glucose for

    (3 points) Anaerobic respiration come from? (2


    points)
    Respiration
    Extension Sheet

    Where does the oxygen for aerobic respiration come from? (2 points)

    Using a diagram in your answer gets you a bonus 2 points!

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