Haemoglobin and Oxygen Transport Quiz
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Questions and Answers

What is the role of haemoglobin in the body?

  • Regulating body temperature
  • Producing energy
  • Transporting oxygen (correct)
  • Digesting food

    • How many oxygen molecules can each molecule of haemoglobin bind?

  • Five molecules
  • Two molecules
  • Three molecules
  • Four molecules (correct)

    • Why do people feel tired when they are iron deficient?

  • Increased production of energy
  • Red blood cells lack haemoglobin for carrying oxygen efficiently (correct)
  • Excess oxygen in the blood
  • Decreased blood circulation

    • What color does deoxygenated haemoglobin appear as?

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

    How does the presence of haemoglobin impact the efficiency of red blood cells?

    <p>Increases efficiency</p> Signup and view all the answers

    Each molecule of haemoglobin is made up of 3 protein molecules that have an iron atom attached to it.

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

    Haemoglobin is responsible for carrying oxygen in the plasma.

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

    Oxyhaemoglobin has a purplish-blue color.

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

    Each iron atom can bind two oxygen molecules.

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

    Erythrocytes are packed with plasma molecules.

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

    Haemoglobin is a ______ contained in erythrocytes and is responsible for carrying oxygen

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

    Each molecule of haemoglobin is made up of 4 ______ molecules that have an iron atom attached to it

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

    Haemoglobin makes RBC much more ______ – they can carry much more O2 than if it was dissolved in plasma

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

    Oxyhaemoglobin is also known as ______ haemoglobin

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

    Deoxyhaemoglobin is also known as ______ haemoglobin

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

    Match the following terms with their descriptions:

    <p>Haemoglobin = Protein contained in erythrocytes and is responsible for carrying oxygen Oxyhaemoglobin = Oxygenated haemoglobin with a red color Erythrocytes = Cells packed with haemoglobin molecules Deoxyhaemoglobin = Deoxygenated haemoglobin with a purplish-blue color</p> Signup and view all the answers

    Match the following components with their functions:

    <p>Iron atom = Attaches to protein molecules to bind oxygen Protein molecules = Make up the structure of haemoglobin Oxygen molecules = Bound to iron atoms in haemoglobin Haemoglobin = Carries oxygen in erythrocytes</p> Signup and view all the answers

    Match the following characteristics with their effects:

    <p>Presence of haemoglobin = Increases oxygen-carrying capacity of RBCs Iron deficiency = Leads to feelings of tiredness Oxyhaemoglobin formation = Results in a red color Deoxyhaemoglobin formation = Results in a purplish-blue color</p> Signup and view all the answers

    Match the following terms with their properties:

    <p>Oxyhaemoglobin = Oxygen-rich and appears red Deoxyhaemoglobin = Oxygen-poor and appears purplish-blue Erythrocytes = Cells containing haemoglobin molecules Haemoglobin = Protein made up of 4 subunits with iron atoms</p> Signup and view all the answers

    Match the following consequences with their underlying causes:

    <p>Feeling tired = Iron deficiency affecting haemoglobin production RBCs carrying more oxygen = Presence of haemoglobin in erythrocytes Haemoglobin molecules forming = Assembly of protein molecules with iron atoms Purplish-blue color of blood = High levels of deoxyhaemoglobin</p> Signup and view all the answers

    Why do people feel tired when they are iron deficient?

    <p>Decreased oxygen-carrying capacity in the blood</p> Signup and view all the answers

    What is the color of deoxygenated hemoglobin?

    <p>Purplish-blue</p> Signup and view all the answers

    How many oxygen molecules can each molecule of hemoglobin bind?

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

    Where is carbon dioxide mostly transported in the body?

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

    What does hemoglobin attach to in order to transport oxygen?

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

    What is the significance of the iron atom in the haemoglobin molecule?

    <p>Each iron atom can carry one oxygen molecule.</p> Signup and view all the answers

    How does the presence of haemoglobin affect the transport of oxygen in the blood?

    <p>Haemoglobin makes RBC more efficient, enabling them to carry much more oxygen than if it was dissolved in plasma.</p> Signup and view all the answers

    What is the difference in the way oxygen and carbon dioxide are transported in the blood?

    <p>Oxygen is mainly transported bound to haemoglobin, while carbon dioxide is mostly dissolved and transported in the serum.</p> Signup and view all the answers

    What is the name given to haemoglobin that has oxygen bound to it?

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

    What is the color of deoxygenated haemoglobin?

    <p>Purplish-blue</p> Signup and view all the answers

    Deoxyhaemoglobin is the term used to describe oxygenated haemoglobin.

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

    Carbon dioxide is mostly transported in the red blood cells.

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

    The presence of haemoglobin in red blood cells makes them less efficient at carrying oxygen.

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

    Each iron atom in haemoglobin can bind two oxygen molecules.

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

    Erythrocytes are packed with haemoglobin molecules.

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

    What is the primary mechanism by which the body removes CO2?

    <p>Exhaling it through the lungs</p> Signup and view all the answers

    Where is CO2 primarily transported in the blood?

    <p>In the serum</p> Signup and view all the answers

    What is the difference in the way oxygen and CO2 are transported in the blood?

    <p>Oxygen is bound to hemoglobin, while CO2 is dissolved in the serum</p> Signup and view all the answers

    Why does the body need to remove CO2?

    <p>Because it is a byproduct of tissue metabolism</p> Signup and view all the answers

    What percentage of CO2 enters the red blood cells?

    <p>A very small amount of it</p> Signup and view all the answers

    Where is carbon dioxide mostly transported in the blood?

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

    What is the primary role of haemoglobin in the body?

    <p>To transport oxygen in the blood</p> Signup and view all the answers

    How does CO2 enter the blood stream?

    <p>As a waste product of tissue metabolism</p> Signup and view all the answers

    What is the difference between oxygen and carbon dioxide transport in the blood?

    <p>CO2 is transported in the serum, while oxygen is transported in the RBC</p> Signup and view all the answers

    Why is it important to remove CO2 from the body?

    <p>Because it is a waste product of tissue metabolism</p> Signup and view all the answers

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