N.U.S.T Dentistry Class 1 - Biology Cell Cycle Lec.8
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Questions and Answers

During which phase of the cell cycle does DNA replication begin in the nucleus?

  • Mitosis phase (M phase)
  • Gap1 (G1)
  • Synthesis phase (S phase) (correct)
  • Gap2 (G2)
  • Which phase is marked by the initiation of condensation of chromosomal material?

  • Gap1 (G1)
  • Gap2 (G2)
  • Synthesis phase (S phase)
  • Prophase (correct)
  • What percentage of the cell cycle duration does interphase typically occupy?

  • Around 50%
  • Around 70%
  • Less than 50%
  • More than 95% (correct)
  • Which phase involves the duplication of centrioles in the cytoplasm?

    <p>Synthesis phase (S phase)</p> Signup and view all the answers

    At which phase of the cell cycle do cells increase in size but do not replicate their DNA?

    <p>Gap1 (G1)</p> Signup and view all the answers

    What follows the mitotic (M) phase in the cell cycle?

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

    During prophase, which cellular components are not visible in the cell under a microscope?

    <p>Golgi complexes, endoplasmic reticulum, nucleolus, and the nuclear envelope</p> Signup and view all the answers

    What is the main role of centrioles during mitosis?

    <p>Moving towards opposite poles of the cell</p> Signup and view all the answers

    What happens to the chromatids during anaphase of mitosis?

    <p>They are pulled apart and move to opposite ends of the cell</p> Signup and view all the answers

    What defines the completion of cytokinesis?

    <p>Division of nuclei, cytoplasm, organelles, and cell membrane into two cells</p> Signup and view all the answers

    What characterizes telophase of mitosis?

    <p>Chromosomes decondense and nuclear envelope forms</p> Signup and view all the answers

    In metaphase of mitosis, where do chromosomes line up?

    <p>In the middle of the cell (the equator)</p> Signup and view all the answers

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