Human Blood Composition
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Questions and Answers

What is the name of the protein in red blood cells responsible for oxygen transport?

  • Ankyrin
  • Haemoglobin (correct)
  • Spectrin
  • Actin
  • What is the primary function of red blood cells?

  • To regulate blood pressure
  • To fight infections
  • To transport oxygen from the lungs to the body's tissues (correct)
  • To produce antibodies
  • What is the primary function of red blood cells?

  • To transport gases in the blood (correct)
  • To produce antibodies
  • To fight infections
  • To form blood clots
  • What is the shape of the red blood cell membrane?

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

    What type of tissue is blood classified as?

    <p>Connective tissue</p> Signup and view all the answers

    What percentage of blood is made up of plasma?

    <p>55%</p> Signup and view all the answers

    What is the name of the compound formed when haemoglobin binds to oxygen?

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

    What is the estimated number of red blood cells in an adult's body?

    <p>20-30 trillion</p> Signup and view all the answers

    What is the purpose of the red blood cell membrane?

    <p>To form a stable barrier between the cell's interior and exterior</p> Signup and view all the answers

    What is the lifespan of red blood cells?

    <p>120 days</p> Signup and view all the answers

    What is the term for the process of carrying oxygen from the lungs to the body's tissues?

    <p>Oxygen transport</p> Signup and view all the answers

    How many oxygen molecules can one haemoglobin molecule bind?

    <p>4</p> Signup and view all the answers

    What is the primary function of haemoglobin in red blood cells?

    <p>Transporting oxygen and carbon dioxide</p> Signup and view all the answers

    What gives haemoglobin its role as an oxygen acceptor?

    <p>The iron atom</p> Signup and view all the answers

    What is unique about red blood cells compared to other cells?

    <p>They lack a nucleus and other organelles</p> Signup and view all the answers

    What is the term for the nucleated cells in the blood that play a role in defending the body against infection and other aggressions?

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

    In which part of the body does haemoglobin bind oxygen?

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

    What is the proportion of haemoglobin in the mass of a red blood cell?

    <p>1/3</p> Signup and view all the answers

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