The cell cycle

• How does the cell prepare for mitosis during the G2 phase?

  • Checks for DNA damage
  • Synthesizes proteins and organelles needed for cell division
  • Ensures chromosomes are properly replicated
• What are the main stages of the cell cycle?

  • G0 (Quiescent)
  • G1 (Cell Growth)
  • S (DNA Replication)
  • G2 (Preparation for Mitosis)
  • M (Mitosis)
• How does the cell prepare for mitosis during the G2 phase?

  • Checks for DNA damage
  • Synthesizes proteins and organelles needed for cell division
  • Ensures chromosomes are properly replicated
• What is the purpose of the interphase in the cell cycle?

  Cell growth and DNA preparation
• What is the name of the phase where the cell divides into two daughter cells?

  M phase (mitosis)
• If a cell is in the G2 phase, what is the next phase it will enter?

  M phase (mitosis)
• What are the key events that occur during the M phase of the cell cycle?

  • Cytokineisis (Cell Division)
  • Telophase
  • Anaphase
  • Metaphase
  • Prophase
• If a cell is in the G2 phase, what is it likely doing?

  Preparing for mitosis
• What is the cell division cycle?

  A sequence of events for cell growth and division
• How does the G1 phase differ from the G2 phase in the cell cycle?

  G1 is for cell growth, G2 is for preparation for mitosis
• Why is the S phase an important part of the cell cycle?

  It is the stage where the cell replicates its DNA
• What is checked at the G2 checkpoint?

  DNA replication check
• What are the key differences between the G1 and G2 phases of the cell cycle?

  G1:

  • Cell growth and preparation for DNA replication

  G2:

  • Further growth and preparation for mitosis
  • Checks for DNA damage and replication errors
• If a cell is in the G1 phase, what is the next phase it will enter?

  S phase
• How do the G1, S, and G2 phases relate to the overall process of cell growth and division?

  G1 is for cell growth, S is for DNA replication, and G2 prepares the cell for mitosis
• What are the main stages of the cell cycle?

  • G0 (Quiescent)
  • G1 (Cell Growth)
  • S (DNA Replication)
  • G2 (Preparation for Mitosis)
  • M (Mitosis)
• How does the M checkpoint ensure proper chromosome segregation?

  • Checks if all chromosomes are properly attached to spindle fibers
  • Ensures sister chromatids are aligned at the metaphase plate
  • Waits for all chromosomes to be properly segregated before allowing cell division
• What are the three main checkpoints in the cell cycle?

  • G1 checkpoint: checks cell size and DNA integrity
  • G2 checkpoint: checks DNA replication
  • M checkpoint: checks correct chromosome attachment
• What is the purpose of cell division in the cell cycle?

  To split one cell into two identical daughter cells
• What are the two main phases of the cell cycle?

  • Interphase: Growth phase where DNA replicates
  • Cell division: Process where one cell splits into two
• What are the key events that occur during the M phase of the cell cycle?

  • Cytokineisis (Cell Division)
  • Telophase
  • Anaphase
  • Metaphase
  • Prophase
• What is the main event during the S phase of interphase?

  DNA replication takes place and chromosomes duplicate
• What occurs during interphase of the cell cycle?

  DNA replicates during the growth phase
• What happens during the G2 phase of interphase?

  Continued growth and final preparations for cell division
• What is the name of the phase between G1 and S phase?

  G2
• What are the stages of the M phase?

  Prophase, Metaphase, Anaphase, Telophase
• Why is the S phase an important part of the cell cycle?

  It is when DNA synthesis and replication occurs
• What occurs during the G1 phase of interphase?

  Cell growth occurs and organelles double
• What is the G0 phase in the cell cycle?

  A resting state where cells don't divide
• How does the G1 phase differ from the G2 phase in the cell cycle?

  G1 is for cell growth, G2 is for preparation for mitosis
• What are the two main events that occur during the M phase of the cell cycle?

  • Mitosis: Division of the cell nucleus
  • Cytokinesis: Division of the cytoplasm and organelles
• What is checked at the M checkpoint?

  Correct chromosome attachment
• If a cell is in the G2 phase, what is it likely doing?

  Preparing for mitosis
• What is the purpose of the G1, S, and G2 phases of the cell cycle?

  • G1 phase: Cell growth and preparation for DNA replication
  • S phase: DNA synthesis and replication
  • G2 phase: Further cell growth and preparation for cell division
• How do the G1, S, and G2 phases relate to cell growth and DNA synthesis?

  • G1 phase: Cell growth and preparation for DNA replication
  • S phase: DNA synthesis and replication
  • G2 phase: Further cell growth and preparation for cell division
• What are the key differences between the G1 and G2 checkpoints in the cell cycle?

  • G1 checkpoint checks if cell is ready to enter S phase
  • G2 checkpoint checks if cell is ready to enter M phase
  • G1 checkpoint ensures sufficient growth and resources for DNA synthesis
  • G2 checkpoint ensures proper preparation for cell division
• What are the phases of interphase and their key events?

  • G1 phase: Cell growth and organelle doubling
  • S phase: DNA replication and chromosome duplication
  • G2 phase: Continued growth and preparations for cell division
• How do checkpoints contribute to cell cycle progression?

  They ensure readiness before advancing stages
• What is the purpose of the G1, G2, and M checkpoints in the cell cycle?

  • G1 checkpoint: Checks if cell is ready to proceed to S phase
  • G2 checkpoint: Checks if cell is ready to proceed to M phase
  • M checkpoint: Ensures proper chromosome segregation before cell division
• How does the M checkpoint ensure proper chromosome segregation?

  • Checks if all chromosomes are properly attached to spindle fibers
  • Ensures sister chromatids are aligned at the metaphase plate
  • Waits for all chromosomes to be properly segregated before allowing cell division