Cell Cycle, Meiosis, and Cell Death Quiz
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Questions and Answers

During the G2/M checkpoint, what is the main function of the activated MPF?

  • Check alignment of chromosomes on the metaphase plate
  • Initiate cell division (correct)
  • Trigger apoptosis if DNA is damaged
  • Ensure proper DNA replication
  • Which of the following is a common reason for cells to be unable to progress past the G2/M checkpoint?

  • Lack of mitogens in the external environment
  • Improper alignment of chromosomes
  • Insufficient nutrition for the cell
  • Presence of damaged DNA (correct)
  • What is the role of mitogens in the cell cycle process?

  • Induce apoptosis in damaged cells
  • Ensure proper alignment of chromosomes
  • Signal cells to divide (correct)
  • Activate caspases for cell death
  • Which checkpoint ensures that all chromosomes are aligned and attached to the mitotic spindle before proceeding to anaphase?

    <p>Spindle checkpoint</p> Signup and view all the answers

    What is the main function of mitosis in the cell cycle?

    <p>Produce genetically identical daughter cells</p> Signup and view all the answers

    In a eukaryotic cell, what initiates progression past the G1/S checkpoint?

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

    What is the primary function of mitogens in the regulation of cell proliferation?

    <p>To stimulate cell growth and division by activating Cdks</p> Signup and view all the answers

    During which phase of the cell cycle is the G2/M checkpoint primarily active?

    <p>G2 phase</p> Signup and view all the answers

    What is the primary function of the spindle checkpoint during mitosis?

    <p>To ensure proper chromosome alignment and segregation</p> Signup and view all the answers

    What is the unique characteristic of meiosis that distinguishes it from mitosis?

    <p>Meiosis involves the production of two haploid daughter cells</p> Signup and view all the answers

    Which of the following is NOT a characteristic of cells that do not divide at all once mature?

    <p>Epithelial linings of the intestine</p> Signup and view all the answers

    Which factor specifically drives the cell cycle and leads to proliferation?

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

    Which checkpoint regulates the entry into the mitotic phase and ensures accurate chromosome segregation?

    <p>Spindle checkpoint</p> Signup and view all the answers

    Which checkpoint regulates the entry into the DNA synthesis phase during the cell cycle?

    <p>G1/S checkpoint</p> Signup and view all the answers

    Which process produces haploid cells for sexual reproduction?

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

    Which family of enzymes plays a crucial role in the proteolytic cascade during apoptosis?

    <p>Caspase family</p> Signup and view all the answers

    Which phase of the cell cycle is associated with the G2/M checkpoint?

    <p>M phase</p> Signup and view all the answers

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