Nucleus and Cell Cycle Basics
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Questions and Answers

What holds the sister chromatids together during early stages of mitosis?

  • The kinetochore regions
  • The ring of proteins at the centromere (correct)
  • The nucleolus
  • The spindle fibers

    • During which phase does the nuclear envelope begin to disintegrate?

  • Prophase (correct)
  • Telophase
  • Metaphase
  • Anaphase

    • What is the function of the kinetochore?

  • To provide attachment points for spindle fibers (correct)
  • To align the chromosomes at the equator
  • To hold the sister chromatids together
  • To disintegrate the nuclear envelope

    • During which phase do the sister chromatids separate and move to opposite ends of the cell?

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

    What is the contractile ring composed of during cytokinesis?

    <p>Actin filaments</p> Signup and view all the answers

    What forms the cell plate during cytokinesis?

    <p>The granular matrix from the Golgi body and endoplasmic reticulum</p> Signup and view all the answers

    Which phase is considered the shortest stage of mitosis?

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

    During which phase do the chromosomes become indistinct chromatin again?

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

    What happens to the spindle during telophase?

    <p>It disappears</p> Signup and view all the answers

    Which phase of mitosis is described as the shortest?

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

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