Cell Biology Functions Quiz
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Questions and Answers

What is the main function of keratin in hair?

  • To act as an enzyme
  • To act as a hormone
  • To provide structural support (correct)
  • To transport substances across the cell membrane
  • Which of the following enzymes is responsible for breaking down starches?

  • Trypsin
  • Pepsin
  • Lipase
  • Amylase (correct)
  • What is the main function of hemoglobin in the body?

  • To act as an antibody
  • To provide structural support
  • To transport oxygen from the lungs to cells (correct)
  • To act as an enzyme
  • What is the maximum recommended percentage of dietary intake that should come from lipids?

    <p>30%</p> Signup and view all the answers

    Which of the following is a key function of lipids in the body?

    <p>To provide energy</p> Signup and view all the answers

    What is the name of the lipid that forms the cell membrane?

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

    What is the main function of carbohydrates in the body?

    <p>To provide immediate energy for muscles, brain, and cells</p> Signup and view all the answers

    Which of the following is a disaccharide?

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

    Why is glucose considered the most important sugar for the body?

    <p>Both A and B</p> Signup and view all the answers

    Which of the following is a lipid?

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

    What is the primary function of proteins in the body?

    <p>To build and repair body tissues</p> Signup and view all the answers

    Which of the following is a macromolecule?

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

    Which of the following statements about proteins is true?

    <p>Proteins are composed of carbon, hydrogen, oxygen, and nitrogen.</p> Signup and view all the answers

    What is the primary role of fibrous proteins?

    <p>Providing structure and support</p> Signup and view all the answers

    Which of the following is an example of a globular protein?

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

    What percentage of the diet should proteins ideally make up?

    <p>15%</p> Signup and view all the answers

    Which of the following is a characteristic of a complete protein source?

    <p>It contains all essential amino acids.</p> Signup and view all the answers

    How many essential amino acids must be obtained from dietary sources?

    <p>9</p> Signup and view all the answers

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