Cell Cycle and Mitosis Quiz
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Questions and Answers

What structure is needed for the separation of chromatids during mitosis?

  • Centrosome
  • Centriole
  • Centromere (correct)
  • Cell Plate
  • Cancer cells respond normally to signals that tell them to stop dividing.

    False

    What is the term for the capacity of a stem cell to produce different cell types?

    potency

    The introduction of new adult stem cells into damaged tissue to treat a disease or injury is called __________.

    <p>stem cell therapy</p> Signup and view all the answers

    Match the following terms with their definitions:

    <p>Centrosome = Structure that organizes microtubules Centriole = Migrate to poles during cell division Oncogene = Mutated gene that leads to cancer Carcinogen = Agent causing cancer</p> Signup and view all the answers

    What is the primary function of the centrosome in animal cells?

    <p>Acting as a microtubule organizing center</p> Signup and view all the answers

    Cytokinesis in plant cells involves the formation of a cleavage furrow.

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

    What happens during the phase of anaphase in mitosis?

    <p>Sister chromatids are separated and move towards opposite poles of the cell.</p> Signup and view all the answers

    The process by which the cytoplasm is divided into two daughter cells is called _____.

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

    Match the following mitosis-related terms with their descriptions:

    <p>Centrioles = Assemble spindle fibers during prophase Cytokinesis = Division of the cytoplasm Stem Cells = Cells that can divide an unlimited number of times Centrosome = Microtubule organizing center for spindle construction</p> Signup and view all the answers

    Which action does the contractile ring perform during cytokinesis in animal cells?

    <p>It pushes the equator of the cell inwards.</p> Signup and view all the answers

    Plant cells have visible centrioles and asters during mitosis.

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

    How many times can stem cells divide by mitosis?

    <p>An unlimited number of times.</p> Signup and view all the answers

    Which phase of mitosis involves the chromosomes lining up across the equator of the spindle?

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

    The G1 phase is primarily focused on the synthesis of DNA.

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

    What role do centrioles play in cell division?

    <p>Centrioles help organize the mitotic spindle during mitosis.</p> Signup and view all the answers

    In the __________ stage of mitosis, the nuclear envelope starts to reform around the separated chromosomes.

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

    Match the following phases of the cell cycle with their descriptions:

    <p>G1 phase = Cell grows and prepares for DNA synthesis S phase = DNA is replicated G2 phase = Cell prepares for division and checks for errors M phase = Nuclear division occurs</p> Signup and view all the answers

    What is the main purpose of mitosis?

    <p>Cell growth and replacement</p> Signup and view all the answers

    Chromosomes are pulled to the opposite poles during anaphase.

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

    Describe the role of centrosomes during mitosis.

    <p>Centrosomes help organize microtubules and form the spindle fibers required for chromosome movement.</p> Signup and view all the answers

    The process of __________ produces two genetically identical daughter cells.

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

    Which of the following is a characteristic of stem cells?

    <p>Stem cells can differentiate into various cell types.</p> Signup and view all the answers

    Study Notes

    Mitosis

    • The separation of chromatids during mitosis requires the microtubule spindle fibers.
    • Centrioles are structures that form the microtubule spindle fibers.
    • Centrioles are located near the nucleus of the cell and replicate during the S phase of interphase.
    • The separation of chromatids during anaphase results in two identical sets of chromosomes being pulled to the opposite ends of the cell.
    • Cytokinesis is the process that divides the cytoplasm, forming two daughter cells.
    • Cleavage furrow is a structure that forms during cytokinesis in animal cells and is responsible for dividing the cytoplasm.
    • Contractile ring is a structure made up of actin filaments and myosin that contracts and pinches off the cell membrane, resulting in the formation of the cleavage furrow.
    • Telophase is the phase where the nuclear envelope reforms around the separated chromosomes, and the nucleoli reappear.
    • Chromosomes line up along the equator of the spindle during metaphase.
    • Stem cells can divide repeatedly by mitosis.
    • Mitosis is responsible for producing two genetically identical daughter cells.

    Cell Cycle

    • The cell cycle refers to the process by which cells grow and divide.
    • The cell cycle has four phases: G1, S, G2, and M.
    • The G1 phase is characterized by cell growth.
    • The S phase is characterized by DNA synthesis.
    • The G2 phase is characterized by preparation for mitosis.
    • The M phase includes both mitosis and cytokinesis.

    Stem Cells

    • Stem cells are characterized by their ability to self-renew and differentiate into various cell types.
    • Pluripotency refers to the ability of a stem cell to produce different cell types.
    • Therapeutic cloning refers to the introduction of new adult stem cells into damaged tissue to treat a disease or injury.
    • Cancer cells are characterized by uncontrolled growth and division. Cancer cells do not respond normally to signals that tell them to stop dividing.

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    5 The Mitotic Cell Cycle PDF

    Description

    Test your knowledge on the cell cycle and the process of mitosis. This quiz covers key concepts such as interphase stages, and the phases of mitosis, ensuring you understand the critical roles they play in cell division. Perfect for biology students eager to master the intricacies of cellular processes.

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