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

Where is the heme positioned within Myoglobin and Hemoglobin?

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

What is the primary function of Collagen?

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

Which protein transports gases through the blood?

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

What is the most abundant protein in mammals?

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

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

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

What is the function of collagen type IV?

<p>Support and filtration (B)</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 (D)</p> Signup and view all the answers

Which protein contains 2 heavy chains and 2 light chains?

<p>Myosin (B)</p> Signup and view all the answers

What do fibrous proteins primarily provide to structures?

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

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

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

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