2.3 Cell Division

Cards (79)

  • What is the purpose of Meiosis II in terms of chromosome number?
    Further reduces haploid chromosome number
  • Cytokinesis in animal cells involves the formation of a cell plate.
    False
  • Match the cytokinesis mechanism with the cell type:
    Cell plate formation ↔️ Plant cells
    Cleavage furrow formation ↔️ Animal cells
  • Why is the halving of the ploidy level in meiosis essential for sexual reproduction?
    To restore diploid chromosome count
  • Arrange the phases of mitosis in the correct sequence:
    1️⃣ Prophase
    2️⃣ Metaphase
    3️⃣ Anaphase
    4️⃣ Telophase
  • How does cytokinesis differ in plant and animal cells during mitosis?
    Cell plate vs cleavage furrow
  • The key structure involved in cytokinesis in plant cells is the cell plate.
  • What type of fibers make up the contractile ring in animal cells?
    Actin and myosin
  • What process occurs during Prophase I that increases genetic variation?
    Crossing over
  • What is the outcome of Meiosis I in terms of chromosome number reduction?
    Diploid to haploid
  • How many divisions occur in mitosis?
    One
  • What is the purpose of mitosis?
    Growth, repair, asexual reproduction
  • Arrange the phases of mitosis in the correct order.
    1️⃣ Prophase
    2️⃣ Metaphase
    3️⃣ Anaphase
    4️⃣ Telophase
  • During metaphase, chromosomes align at the cell's equator
  • What reforms during telophase?
    Nuclear envelope
  • Animal cells use a cleavage furrow and contractile ring for cytokinesis.

    True
  • Match the cytokinesis mechanism with the cell type.
    Cell plate formation ↔️ Plant cells
    Cleavage furrow formation ↔️ Animal cells
  • Mitosis produces two genetically identical daughter cells.

    True
  • Arrange the phases of mitosis in the correct order:
    1️⃣ Prophase
    2️⃣ Metaphase
    3️⃣ Anaphase
    4️⃣ Telophase
  • In plant cells, cytokinesis involves the formation of a cell plate.

    True
  • In animal cells, cytokinesis involves the formation of a cleavage furrow using a contractile ring of actin and myosin.
    True
  • In animal cells, a contractile ring forms a cleavage furrow to divide the cell.
  • Match the phase of meiosis I with its key event:
    Prophase I ↔️ Crossing over occurs and homologous chromosomes pair up
    Metaphase I ↔️ Homologous pairs align at the cell's equator
    Anaphase I ↔️ Homologous pairs separate and move to opposite poles
    Telophase I ↔️ Nuclear envelope reforms and chromosomes decondense
  • Mitosis produces two identical diploid cells, while meiosis produces four genetically different haploid cells.
  • What is the purpose of mitosis in multicellular organisms?
    Growth, repair, asexual reproduction
  • Arrange the phases of meiosis I in the correct order:
    1️⃣ Prophase I
    2️⃣ Metaphase I
    3️⃣ Anaphase I
    4️⃣ Telophase I
  • Arrange the phases of Meiosis I in the correct sequence:
    1️⃣ Prophase I
    2️⃣ Metaphase I
    3️⃣ Anaphase I
    4️⃣ Telophase I
  • What are two key outcomes of Meiosis I?
    Reduced chromosome number and genetic diversity
  • Genetic variation in meiosis is high due to crossing over and independent assortment
  • The ploidy level in mitosis is halved from diploid to haploid.
    False
  • What happens to chromosomes during prophase?
    They condense and become visible
  • In anaphase, sister chromatids move to opposite poles of the cell.

    True
  • In plant cells, cytokinesis involves the formation of a cell plate
  • What is the contractile ring made of in animal cells?
    Actin and myosin
  • What is the primary purpose of mitosis in multicellular organisms?
    Growth, repair, asexual reproduction
  • Match the phase of mitosis with its key event:
    Prophase ↔️ Chromosomes condense and spindle fibers form
    Metaphase ↔️ Chromosomes align at the cell's equator
    Anaphase ↔️ Sister chromatids separate and move to opposite poles
    Telophase ↔️ Nuclear envelope reforms and chromosomes decondense
  • Cytokinesis is the final stage of cell division where the cytoplasm is physically divided.
  • Why is cytokinesis essential for completing the mitotic cell division process?
    Ensures each daughter cell receives full genetic material
  • What unique event occurs during prophase I of meiosis that increases genetic variation?
    Crossing over
  • Meiosis I reduces the chromosome number from diploid to haploid.

    True