Cell Biology: The Study of the Basic Unit of Life
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Questions and Answers

What is the ultimate goal of cell biology?

  • To learn how to fix the ‘abnormal’ in cells
  • To identify and study how proteins drive a biological cellular process
  • To study the extracellular matrix proteins
  • To understand how macromolecular systems and organelles work and cooperate to enable cells to function autonomously and in tissues (correct)

    • Why is studying cells important?

  • Because the cells are the storehouse for thousands of genes
  • Because they are the site for synthesizing enzymes
  • Because they are the fundamental unit of life (correct)
  • Because it allows us to identify and study how proteins drive a biological cellular process

    • What is cell culture?

  • A process of isolating and maintaining cells in vitro
  • A technique used to grow cells or tissues outside the organism under strictly controlled conditions (correct)
  • A method of studying cell movement
  • A method for identifying how proteins drive a biological cellular process

    • What is contact inhibition in cell culture?

    <p>When cells grow and divide until they are unable to divide further</p> Signup and view all the answers

    What is the purpose of adding insulin in cell culture?

    <p>To signal cells to stay alive and cue growth and division</p> Signup and view all the answers

    What is the Hayflick limit?

    <p>The number of generations a primary cell culture can go through</p> Signup and view all the answers

    How are cells supplied with proper nutrients in cell culture?

    <p>By providing amino acids, minerals, vitamins, salts, glucose, etc., and serum containing insulin and growth factors</p> Signup and view all the answers

    What does serum contain in cell culture?

    <p>Insulin and growth factors</p> Signup and view all the answers

    What happens during the process of contact inhibition in cell culture?

    <p>Cells are unable to divide further due to being closely packed</p> Signup and view all the answers

    What is primary cell culture?

    <p>Cells taken directly from an organism that usually divide a limited number of times (~50 generations)</p> Signup and view all the answers

    What does phenyl red indicate in cell culture?

    <p>Proper pH for growing cells</p> Signup and view all the answers

    What is the purpose of adding CO2 in a CO2 incubator used for cell culture?

    <p>To mimic the natural environment inside the body where cellular atmosphere has a higher CO2 content compared to O2</p> Signup and view all the answers

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