Red Blood Cells and Hemoglobin Overview
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Questions and Answers

What is the primary function of the biconcave disc shape of red blood cells?

  • To facilitate the transportation of oxygen and carbon dioxide
  • To increase the lifespan of red blood cells
  • To increase the surface area to volume ratio (correct)
  • To allow red blood cells to stack up and bend

    • Which of the following is NOT a characteristic of a red blood cell?

  • Lacks the ability to repair itself
  • Has a short lifespan of around 120 days
  • Possesses a nucleus and organelles (correct)
  • Contains approximately 280 million hemoglobin molecules

    • What is the role of hemoglobin in red blood cells?

  • To provide structural support to the cell
  • To regulate the pH of the blood
  • To facilitate the production of new red blood cells
  • To bind to oxygen and transport it throughout the body (correct)

    • What is the primary stimulus for the production of erythropoietin (EPO)?

    <p>Decreased oxygen levels in the body (D)</p> Signup and view all the answers

    What is the role of vitamin B12 in the process of erythropoiesis?

    <p>It is necessary for normal stem cell divisions (C)</p> Signup and view all the answers

    What is the role of the intrinsic factor produced in the stomach during erythropoiesis?

    <p>It is required for the absorption of vitamin B12 (C)</p> Signup and view all the answers

    Which of the following is NOT a function of red blood cells?

    <p>Participating in immune responses (D)</p> Signup and view all the answers

    What is the primary site of erythropoiesis (red blood cell production)?

    <p>Bone marrow (C)</p> Signup and view all the answers

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

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

    Which of the following plasma proteins is involved in the clotting process?

    <p>Fibrinogen (D)</p> Signup and view all the answers

    What is the primary function of hematocrit?

    <p>Assessing the proportion of red blood cells in blood (C)</p> Signup and view all the answers

    Which of the following is NOT a component of the red blood cell structure?

    <p>Nucleus (A)</p> Signup and view all the answers

    Which of the following is the correct sequence of erythropoiesis?

    <p>Proerythroblast &gt; Basophilic Erythroblast &gt; Polychromatophilic Erythroblast &gt; Normoblast &gt; Reticulocyte &gt; RBC (A)</p> Signup and view all the answers

    What is the fate of the protein portion of hemoglobin in old RBCs?

    <p>It is broken down into amino acids (C)</p> Signup and view all the answers

    Which of the following statements about iron recycling is correct?

    <p>Iron binds to transferrin and returns to bone marrow where it can be used to make new hemoglobin (A)</p> Signup and view all the answers

    What is the final product of heme breakdown in the hemoglobin recycling process?

    <p>Urobilin and stercobilin (A)</p> Signup and view all the answers

    Which condition can result from problems with iron uptake or recycling?

    <p>Iron deficiency anemia (B)</p> Signup and view all the answers

    Which of the following is a characteristic of white blood cells (WBCs)?

    <p>All of the above (D)</p> Signup and view all the answers

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