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    The impact of physical activity on cellular respiration

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    Hello. I am trying to do my homework for this week and I have no idea how to answer this question.

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    What is the impact of physical activity on cellular respiration? Why do we need to cool our bodies by sweating when exercising?

    © BrainMass Inc. brainmass.com September 27, 2022, 4:54 pm ad1c9bdddf
    https://brainmass.com/biology/cellular-respiration/impact-physical-activity-cellular-respiration-317727

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    Hello. I am trying to do my homework for this week and I have no idea how to answer this question.

    Here is the question...

    What is the impact of physical activity on cellular respiration? Why do we need to cool our bodies by sweating when exercising?

    Let us briefly revisit cellular respiration:
    During the process of Aerobic Cellular Respiration, glucose and other carbohydrates are broken down using oxygen. This reaction releases energy which is used to create ATP molecules, the energy carrier molecule of cells - exactly what we need during physical activity. The more we work, the more energy we need, resulting in an increase in cellular respiration.

    When the ATP that is generated during cellular respiration is then used to move your muscles or the like, some part of the energy carried within ATP is released in the form of heat. A burst of activity will trigger a burst of ATP usage that results in a burst of heat that is released when ATP is broken down. In addition, heat is not only produced when ATP is broken down, it is actually also produced at the final stage of ATP synthesis during cellular respiration. At the end of the electron transport chain, hydrogen combines with oxygen to form water and this process is exothermic (meaning=it releases heat). So throughout the body when energy is needed, ATP production and usage is increased and along with that heat is produced.

    To ensure that we do not 'overheat', we sweat. Releasing tiny droplets of water on our skin will result in thin film of water covering our outer surface that will slowly evaporate. This evaporation of water results in an effect that is termed evaporative cooling. Just briefly, evaporative cooling is a physical phenomenon in which evaporation of a liquid, typically into surrounding air, cools an object or a liquid in contact with it. For this process heat is needed to evaporate the liquid; this heat comes from the liquid itself and the surrounding gas and surfaces. In our case it is the excess heat our body produces during ATP synthesis and usage. So when exercising we need to sweat more than usual, but as a matter of fact, the human body constantly sweats.

    This content was COPIED from BrainMass.com - View the original, and get the already-completed solution here!

    © BrainMass Inc. brainmass.com September 27, 2022, 4:54 pm ad1c9bdddf>
    https://brainmass.com/biology/cellular-respiration/impact-physical-activity-cellular-respiration-317727

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