Cell Transport Proteins and Functions Quiz
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Questions and Answers

What is the primary function of catalytic proteins?

  • Bind and store small molecules
  • Act as sites for receptor molecules
  • Control enzymatic action by turning enzymes on and off (correct)
  • Help molecules enter and exit the cell
  • Which protein provides immunological protection for mammalian young?

  • Albumin
  • Ferritin
  • Casein (correct)
  • Myoglobin
  • Where are defense proteins often found in the cell?

  • In muscle tissues
  • In blood capillaries
  • Within the cell nucleus
  • Embedded in the exterior surface of cell membranes (correct)
  • Which protein maintains acid-base balance within body fluids?

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

    What is the main function of transport proteins in the cell?

    <p>Help molecules enter and exit the cell</p> Signup and view all the answers

    In which part of the circulatory system can fluid-balance proteins like albumin and globulin be found?

    <p>Blood capillary beds</p> Signup and view all the answers

    Which type of protein is best known for their catalytic role in almost every chemical reaction in the body?

    <p>Defense proteins</p> Signup and view all the answers

    Which proteins are central to the functioning of the body's immune system?

    <p>Structural proteins</p> Signup and view all the answers

    Which proteins are necessary for all forms of movement and are found in muscles as filament-like structures?

    <p>Structural proteins</p> Signup and view all the answers

    Which type of protein is responsible for binding small biomolecules like oxygen and transporting them to different parts of the body?

    <p>Messenger proteins</p> Signup and view all the answers

    Which category of proteins confers stiffness and rigidity, with collagen being a common example?

    <p>Transport proteins</p> Signup and view all the answers

    Transmembrane proteins span a cell membrane and assist in controlling the movement of small molecules and ions. Which category do they belong to?

    <p>Catalytic proteins</p> Signup and view all the answers

    Which type of proteins are oxytocin and vasopressin?

    <p>Transport proteins</p> Signup and view all the answers

    In terms of biochemically important small peptides, which category do enkephalins belong to?

    <p>Defense proteins</p> Signup and view all the answers

    What is the primary function of oxytocin and vasopressin?

    <p>Regulating fluid balance</p> Signup and view all the answers

    Which of the following is true about the number of isomeric peptides as the peptide chain length increases?

    <p>The number increases rapidly</p> Signup and view all the answers

    What role do enkephalins play in the body?

    <p>Assisting in pain reduction</p> Signup and view all the answers

    What are the two best-known enkephalins?

    <p>Met-enkephalin and Leu-enkephalin</p> Signup and view all the answers

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