Importance of Water in Human Biology
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Importance of Water in Human Biology

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Questions and Answers

What is the primary biological function of water in the body?

  • Providing energy to cells
  • Forming structural proteins
  • Regulating body temperature (correct)
  • Transporting oxygen
  • Which property of water allows it to dissolve ionic and polar organic compounds?

  • Polarity (correct)
  • Density
  • Hydrogen bonding
  • Viscosity
  • Which percentage of the human body is composed of water?

  • 75% (correct)
  • 85%
  • 65%
  • 50%
  • What is the specific heat of water?

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

    What role does hydrogen bonding play in cells?

    <p>It regulates the folding of nucleic acids and proteins</p> Signup and view all the answers

    What is the effect of water's high specific heat on homeostasis?

    <p>It maintains stable body temperature</p> Signup and view all the answers

    What type of bond exists between water molecules that contributes to its properties?

    <p>Hydrogen bonds</p> Signup and view all the answers

    Which of the following is NOT a function of water in biological systems?

    <p>Providing structural support</p> Signup and view all the answers

    Study Notes

    Water

    • Water is essential for life and constitutes approximately 75% of the human body.
    • Water is a polar molecule due to the electronegativity difference between oxygen and hydrogen atoms, resulting in a partial negative charge on oxygen and partial positive charges on the hydrogen atoms.
    • The polar nature of water allows it to form hydrogen bonds with other polar molecules, making it an excellent solvent for ionic compounds and polar organic molecules.
    • Water is vital for regulating digestion, transporting nutrients, and excreting waste products.
    • Water facilitates the transportation of digested products throughout the body.
    • Water serves as the medium for all metabolic reactions within the body due to its ability to dissolve polar molecules.
    • Water regulates body temperature through sweating and evaporation, leveraging its high specific heat capacity.
    • Water plays a key role in maintaining homeostasis as most cells are composed primarily of water.
    • Water contributes to the formation of biological membranes by interacting with various organic compounds.
    • Water impacts the structure and function of essential cellular components like DNA and proteins by regulating the folding process through hydrogen bonding.

    The Specific Heat of Water

    • Water has a high specific heat which means it requires a significant amount of energy to raise or lower its temperature.
    • This property makes water resistant to changes in temperature.

    The Electronegativity of Oxygen and Hydrogen

    • Oxygen is more electronegative than hydrogen.

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    Description

    Explore the vital functions of water in human biology through this quiz. Understand how water acts as a solvent, regulates body temperature, and facilitates digestion and nutrient transportation. Test your knowledge on the polar nature of water and its role in metabolic reactions.

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