WK 3: Cell cycle and division

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Questions and Answers

What is the primary function of G1 phase in the cell cycle?

  • Metaphase
  • Spindle pole duplication
  • Growth of the cell following cell division (correct)
  • DNA synthesis

What is the term for a cell that is unable to proliferate and leave the cell cycle?

  • Labile cell
  • Somatic cell
  • Stable cell
  • Permanent cell (correct)

What is the term for the part of a chromosome that joins two sister chromatids?

  • Chromatid
  • Centromere (correct)
  • Chromosome
  • Gamete

What is the process by which a single mother cell leads to two identical daughter cells?

<p>Mitosis (C)</p> Signup and view all the answers

What is the term for a cell that continuously divides and regenerates?

<p>Labile cell (D)</p> Signup and view all the answers

What is the process by which gametes are produced?

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

What happens to the chromosomes at the centromere during anaphase of mitosis?

<p>One chromatid moves to one pole, the other to the other pole (D)</p> Signup and view all the answers

What is the result of mitosis in terms of the number of chromosomes per cell?

<p>The number of chromosomes remains the same (C)</p> Signup and view all the answers

What is the purpose of meiosis?

<p>To produce gametes with halved chromosome number (D)</p> Signup and view all the answers

What is the term for the stage of mitosis where chromosomes line up along the middle of the cell?

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

What is the result of the M checkpoint in mitosis?

<p>Spindle attachment is corrected (D)</p> Signup and view all the answers

What is the term for the process of cell division that results in two identical daughter cells?

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

What occurs in germ cells?

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

What is the result of cytokinesis in meiosis?

<p>Four haploid cells (B)</p> Signup and view all the answers

What is the result of mitosis in somatic cells?

<p>Two diploid cells (A)</p> Signup and view all the answers

What occurs during prophase I of meiosis?

<p>Pairing of homologs and crossing over (A)</p> Signup and view all the answers

What happens to sister chromatids during anaphase I of meiosis?

<p>They do not divide (B)</p> Signup and view all the answers

What is the result of fertilisation?

<p>One diploid nucleus (A)</p> Signup and view all the answers

How many unique combinations of chromosomes can result from the process of crossing over during meiosis?

<p>8,388,608 (C)</p> Signup and view all the answers

During which stage of meiosis do the homologous pairs separate?

<p>Anaphase I (D)</p> Signup and view all the answers

What is the result of Telophase I in meiosis?

<p>23 chromosomes per cell (A)</p> Signup and view all the answers

What is the main difference between Meiosis II and Mitosis?

<p>Meiosis II starts with half the number of chromosomes (A)</p> Signup and view all the answers

During which stage of meiosis do the centromeres divide?

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

What is the result of the combination of Telophase II and cytokinesis in meiosis?

<p>Two gametes with 23 chromosomes (A)</p> Signup and view all the answers

What is the term for the process of cell division that results in two genetically identical daughter cells?

<p>Mitosis (C)</p> Signup and view all the answers

What is the name of the chromosomes that occur in pairs, with one inherited from each parent?

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

What is the term for a reproductive cell that is capable of being fertilized and reproducing an entire organism?

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

What is the term for the part of a chromosome that carries a linear array of genes?

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

What is the stage of mitosis where the nuclear envelope breaks down?

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

What type of cell is a component of the body but is not a reproductive cell?

<p>Somatic cell (C)</p> Signup and view all the answers

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