2.1.1 Stages of the Cell Cycle

    Cards (37)

    • DNA replication occurs during the S phase of interphase.

      True
    • Why do chromosomes condense during prophase?
      To prepare for division
    • What is the main characteristic of metaphase?
      Chromosomes align at mid-plane
    • Why is chromosome condensation necessary during prophase?
      To allow easy separation
    • During anaphase, the spindle fibers shorten, pulling the chromatids to the opposite poles
    • What reforms around each set of chromosomes during telophase?
      Nuclear envelope
    • Stages of interphase in the correct sequence
      1️⃣ G1 (Gap 1)
      2️⃣ S (Synthesis)
      3️⃣ G2 (Gap 2)
    • Match the stage of interphase with its purpose:
      G1 (Gap 1) ↔️ Growth and preparation for DNA replication
      S (Synthesis) ↔️ DNA replication
      G2 (Gap 2) ↔️ Final preparation for mitosis
    • What is the longest phase of the cell cycle?
      Interphase
    • Arrange the key events of prophase in the correct sequence.
      1️⃣ Chromosomes condense
      2️⃣ Nuclear envelope breaks down
      3️⃣ Mitotic spindle forms
      4️⃣ Centrosomes move to opposite poles
    • What is the role of the mitotic spindle during prophase?
      To prepare to pull chromosomes apart
    • DNA replication ensures each daughter cell receives a complete set of DNA
    • What happens to sister chromatids during anaphase?
      They separate and move apart
    • Chromosomes decondense into chromatin during telophase.

      True
    • Interphase is the longest phase of the cell cycle
    • The G2 phase ensures the cell is ready for division
    • Centrosomes move to opposite poles during prophase.
    • Spindle fibers attach to the centromeres of chromosomes during metaphase.
    • The centromeres split, allowing the sister chromatids to separate during anaphase.
    • What is the purpose of chromosomes decondensing during telophase?
      DNA becomes accessible
    • Arrange the stages of the cell cycle in the correct sequence.
      1️⃣ Interphase (G1, S, G2)
      2️⃣ Prophase
      3️⃣ Metaphase
      4️⃣ Anaphase
      5️⃣ Telophase
      6️⃣ Cytokinesis
    • What is checked during the G2 phase of interphase?
      DNA errors
    • The nuclear envelope breaks down during prophase to allow interaction with the mitotic spindle.

      True
    • Spindle fibers attach to the centromeres of chromosomes during metaphase.

      True
    • Arrange the key events of metaphase in the correct sequence.
      1️⃣ Chromosomes align at the cell's midplane
      2️⃣ Spindle fibers attach to centromeres
      3️⃣ The cell monitors correct attachment
    • What splits during anaphase to allow sister chromatids to separate?
      Centromeres
    • Arrange the key events of telophase in the correct sequence.
      1️⃣ Chromosomes decondense into chromatin
      2️⃣ Nuclear envelope reforms
      3️⃣ Spindle fibers disassemble
      4️⃣ The cell prepares for cytokinesis
    • DNA replication occurs during the G1 phase of interphase.
      False
    • What is the first stage of mitosis?
      Prophase
    • Chromosomes align at the cell's midplane during metaphase.
      True
    • Sister chromatids separate during anaphase.

      True
    • Events of telophase in the correct sequence
      1️⃣ Chromosomes decondense
      2️⃣ Nuclear envelope reforms
      3️⃣ Spindle fibers disassemble
      4️⃣ Preparation for cytokinesis
    • What structure creates a new cell wall in plant cells during cytokinesis?
      Cell plate
    • What is the role of the mitotic spindle in prophase?
      Prepares to pull chromosomes apart
    • Why is correct attachment monitored during metaphase?
      To prevent premature anaphase
    • What ensures each daughter cell receives a complete set of genetic material during anaphase?
      Chromosomes move to opposite poles
    • Cytokinesis in animal cells involves the formation of a furrow.
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