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Biology Quiz: Stem Cells and Haematopoiesis
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Biology Quiz: Stem Cells and Haematopoiesis

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Questions and Answers

How long does it take for an Eosinophil to leave circulation once released from bone marrow?

  • Leave circulation within 4-6 h of release from bone marrow
  • Leave circulation within 2-6 h of release from bone marrow (correct)
  • Leave circulation within 8-12 h of release from bone marrow
  • Leave circulation within 2-4 h of release from bone marrow
  • What is the diameter of a platelet?

  • 2-4μm
  • 1-2μm (correct)
  • 0.01-0.02mm
  • 1-2nm
  • What is the lifespan of a macrophage?

  • 3 weeks
  • Months/years
  • Days/weeks (correct)
  • Seconds/minutes
  • Which of the following is not a symptom of anaemia?

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

    How long does it take for a cell to leave circulation once released from bone marrow?

    <p>Several seconds</p> Signup and view all the answers

    What is the characteristic of a totipotent stem cell?

    <p>Can divide to produce all cell types of an organism</p> Signup and view all the answers

    What is the correct order of events in haematopoiesis?

    <p>Self-renewal, developmental pathway, committed cells, differentiated functional cell</p> Signup and view all the answers

    Which of the following statements is true about red blood cells?

    <p>Old and damaged red blood cells are removed by the liver and the spleen</p> Signup and view all the answers

    Where does haematopoiesis occur in an adult?

    <p>In the interstitium between the medullary vascular sinuses of the bone marrow</p> Signup and view all the answers

    What is the diameter of a normoblast?

    <p>6-8μm</p> Signup and view all the answers

    Which of the following statements is false about red blood cells?

    <p>Red blood cells have a nucleus</p> Signup and view all the answers

    Where does haematopoiesis occur in a foetus?

    <p>Exclusively in the liver throughout intrauterine life</p> Signup and view all the answers

    What is the lifespan of an Eosinophil?

    <p>Several hours</p> Signup and view all the answers

    Study Notes

    Stem Cells

    • A totipotent stem cell is a stem cell that can divide to produce all cell types of an organism.

    Haematopoiesis

    • The correct order of haematopoiesis is self-renewal, committed cells, developmental pathway, differentiated functional cell.
    • Haematopoiesis in a foetus occurs in the liver throughout intrauterine life, and in an adult, it occurs in the interstitium between the medullary vascular sinuses of the bone marrow.

    Red Blood Cells

    • Red blood cells have a biconcave shape and are approximately 7 μm in diameter.
    • Red blood cells do not have a nucleus.
    • Red blood cells only respire anaerobically.
    • Old and damaged red blood cells are removed by the liver and the spleen.

    Normoblasts

    • The diameter of a normoblast is 6-8 μm.

    Eosinophils

    • The lifespan of an eosinophil is several days.
    • An eosinophil leaves circulation within 2-6 h of release from bone marrow.

    Platelets

    • The diameter of a platelet is 2-4 μm.

    Macrophages

    • The lifespan of a macrophage is days/weeks.

    Anaemia

    • Symptoms of anaemia include shortness of breath, dizziness, weakness, and yellow eyes.
    • High blood pressure is not a symptom of anaemia.

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    Description

    Test your knowledge of biology with these questions about stem cells and haematopoiesis. Learn about the different types of stem cells and the process of blood cell formation.

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