Lesson 4: Structure-Function Relationship in Specific Proteins
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Lesson 4: Structure-Function Relationship in Specific Proteins

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Questions and Answers

Which type of proteins have a compact, globular (rounded) shape and are water soluble?

  • Myoglobin and Hemoglobin
  • Fibrous proteins
  • Conjugated proteins
  • Globular proteins (correct)

    • Which proteins function as localized oxygen reserves for times of intense respiration?

  • Actin fibers
  • Collagen
  • Myosin
  • Myoglobin and Hemoglobin (correct)

    • What is the complex organic ring structure in prosthetic group of Myoglobin and Hemoglobin?

  • Protoporphyrin (correct)
  • Apoprotein
  • Globular proteins
  • Erythrocytes

    • In the heme of Myoglobin and Hemoglobin, the iron atom is in which state?

    <p>Ferrous (Fe2+)</p> Signup and view all the answers

    Where is the heme positioned within Myoglobin and Hemoglobin?

    <p>Within a hydrophobic pocket of the apoprotein</p> Signup and view all the answers

    What is the primary function of Collagen?

    <p>Provides structural support to tissues</p> Signup and view all the answers

    Which protein transports gases through the blood?

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

    What triggers a change in conformation from the T state to the R state in hemoglobin?

    <p>Binding of oxygen</p> Signup and view all the answers

    Which type of protein is characterized by being insoluble in water and adapted for structural functions?

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

    What is the most abundant protein in mammals?

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

    Which disease is caused by a lack of vitamin C required for the formation of hydroxyproline?

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

    Which protein is associated with the globular domains containing a site where ATP is hydrolyzed?

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

    What is the function of collagen type IV?

    <p>Support and filtration</p> Signup and view all the answers

    In which type of tissue is collagen type III found?

    <p>Smooth muscle, uterus, arteries, liver, spleen, lung, kidney</p> Signup and view all the answers

    Which protein contains 2 heavy chains and 2 light chains?

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

    What do fibrous proteins primarily provide to structures?

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

    What triggers the change in conformation of hemoglobin from T state to R state?

    <p>Binding of oxygen</p> Signup and view all the answers

    What does collagen fibers have that increases in number with age?

    <p>Cross-links</p> Signup and view all the answers

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