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) (A)</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) (B)</p> Signup and view all the answers

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

<p>Cytokinesis (B)</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 (D)</p> Signup and view all the answers

What is the main role of centrioles during mitosis?

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

What characterizes telophase of mitosis?

<p>Chromosomes decondense and nuclear envelope forms (A)</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) (B)</p> Signup and view all the answers

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