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Introduction to the Cell Cycle quiz #3

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  • During which phase of the cell cycle do sister chromatids first appear?
    Sister chromatids first appear during the S phase after DNA replication.
  • What happens at the end of the M phase and before the G1 phase of the cell cycle?
    At the end of the M phase, cytokinesis occurs, resulting in two daughter cells, which then enter the G1 phase.
  • What is the longest phase of the cell cycle?
    Interphase is the longest phase of the cell cycle.
  • How many daughter cells are made at the end of each correctly completed cell cycle?
    Two daughter cells are made at the end of each correctly completed cell cycle.
  • During which step of the cell cycle does a cell get a signal to begin cell division?
    A cell receives a signal to begin cell division during the G1 phase, at the G1 checkpoint.
  • What is a cell cycle checkpoint?
    A cell cycle checkpoint is a control point where the cell verifies whether certain conditions are met before proceeding to the next phase.
  • What does the S phase stand for?
    The S phase stands for the synthesis phase, where DNA replication occurs.
  • In what phase do our cells make a copy of our chromosomes before mitosis starts?
    Our cells make a copy of our chromosomes during the S phase before mitosis starts.
  • What events occur during the G2 phase of the cell cycle?
    During the G2 phase, the cell continues to grow, produces proteins and organelles, and checks for DNA damage.
  • During which phases of the cell cycle is the cell duplicating its genetic material and organelles?
    The cell duplicates its genetic material during the S phase and organelles during the G1 and G2 phases.
  • Which stage of the cell cycle is matched with the proper event?
    The S phase is matched with DNA replication.
  • What two processes encompass the entire eukaryotic cell cycle?
    Interphase and the mitotic phase encompass the entire eukaryotic cell cycle.
  • What happens during gap 2 (G2) of the cell cycle?
    During G2, the cell continues to grow, produces proteins and organelles, and checks for DNA damage in preparation for mitosis.
  • What happens during gap 1 (G1) of the cell cycle?
    During G1, the cell grows, synthesizes proteins, and prepares for DNA replication.
  • What is the end result of the cell cycle?
    The end result of the cell cycle is the production of two genetically identical daughter cells.
  • Which stage of the cell cycle follows gap 2?
    The M phase follows gap 2 (G2) in the cell cycle.
  • DNA is copied in which phase of the cell cycle? Why does this form sister chromatids?
    DNA is copied during the S phase, forming sister chromatids because each chromosome is replicated to produce two identical copies.
  • What is the phase that not all cells enter?
    Not all cells enter the G0 phase, which is a resting phase where cells exit the cell cycle.
  • How many chromosome(s) and chromatid(s) do you have before duplication?
    Before duplication, a human cell has 46 chromosomes and 46 chromatids.
  • Which is not a phase of the cell cycle?
    Apoptosis is not a phase of the cell cycle; it is a process of programmed cell death.
  • What part of the cell cycle occurs immediately after the G2 phase?
    The M phase occurs immediately after the G2 phase.
  • Chromosomes form during what part of the cell cycle?
    Chromosomes condense and become visible during prophase of mitosis.
  • What are the main events of the cell cycle?
    The main events of the cell cycle are cell growth, DNA replication, and cell division.
  • What is a series of events that cells go through as they grow and divide?
    The cell cycle is a series of events that cells go through as they grow and divide.
  • What is/are the function(s) of the cell cycle?
    The functions of the cell cycle include cell growth, DNA replication, and the production of two genetically identical daughter cells.
  • What role do cohesin proteins play in the cell cycle?
    Cohesin proteins hold sister chromatids together after DNA replication until they are separated during mitosis.
  • What activities characterize the G1 phase of the cell cycle?
    During the G1 phase, the cell grows, synthesizes proteins, and prepares for DNA replication.
  • Which phase of the cell cycle is characterized by preparation for DNA synthesis?
    The G1 phase is characterized by preparation for DNA synthesis.
  • The cell prepares for cell division during which gap phase?
    The cell prepares for cell division during the G2 phase.
  • From which phase of the cell cycle does a cell enter G0 phase?
    A cell can enter the G0 phase from the G1 phase.
  • What structure holds the duplicated chromosomes together and is also copied during the S phase?
    The centromere holds the duplicated chromosomes together, and cohesin proteins are also involved.
  • High MPF levels are associated with which phase in the cell cycle?
    High MPF (Maturation Promoting Factor) levels are associated with the transition from G2 to M phase.
  • How does the cell cycle affect the chromosomes that cells carry?
    The cell cycle ensures that chromosomes are accurately replicated and distributed to daughter cells, maintaining genetic consistency.
  • Which comes immediately after S phase in the cell cycle?
    The G2 phase comes immediately after the S phase in the cell cycle.
  • Which stage of the cell cycle involves cell growth and DNA replication?
    Interphase involves cell growth and DNA replication, specifically during the G1, S, and G2 phases.
  • In what phase does the DNA of the cell duplicate?
    The DNA of the cell duplicates during the S phase.
  • Which stage precedes interphase?
    Cytokinesis precedes interphase, marking the end of the previous cell cycle.
  • Which stage in the cell cycle has four phases?
    Interphase has four phases: G0, G1, S, and G2.
  • During what phase of the cell cycle does the cell grow?
    The cell grows during the G1 and G2 phases of the cell cycle.