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Introduction to Cell Division quiz #2

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  • Which process is similar to binary fission?
    Mitosis is similar to binary fission as both result in genetically identical cells.
  • Why is cell division important for both single-celled and multicellular organisms?
    Cell division is crucial for reproduction, growth, and tissue repair in both single-celled and multicellular organisms.
  • How many centromeres would be present in 23 chromosomes?
    There would be 23 centromeres, as each chromosome has one centromere.
  • Which process must the cell undergo to have identical cells at the end of cell division?
    The cell must undergo mitosis to produce identical cells.
  • What type of cell division do somatic cells undergo?
    Mitosis
  • Which process involves two divisions?
    Meiosis involves two divisions.
  • Which organelle is critical for cell division?
    The centrosome is critical for cell division as it organizes microtubules.
  • How many chromosomes did the cell start with?
    The number of chromosomes a cell starts with depends on the organism and cell type; for humans, it is typically 46 in somatic cells.
  • Which form of cell division takes place in human somatic cells?
    Mitosis takes place in human somatic cells.
  • Which type of cells divide very frequently?
    Skin cells
  • What is the role of the centrioles in cell division?
    Centrioles help organize the microtubules that separate chromosomes during cell division.
  • What is a chromatid?
    A chromatid is one of two identical halves of a replicated chromosome.
  • During which process do multicellular organisms accumulate many cells?
    Multicellular organisms accumulate many cells during mitosis.
  • Which part of cell division is different in plant and animal cells?
    Cytokinesis is different in plant and animal cells; plant cells form a cell plate, while animal cells form a cleavage furrow.
  • With respect to chromosomal division, what is the difference between mitosis and meiosis?
    Mitosis results in two identical daughter cells, while meiosis results in four genetically diverse gametes.
  • What is the cell division that occurs in the earliest stages of zygote development called?
    The cell division in the earliest stages of zygote development is called mitosis.
  • How do rates of cell division vary among eukaryotic cells?
    Different types of eukaryotic cells divide at different rates depending on their function and needs.
  • What two structures make up a single replicated chromosome?
    A single replicated chromosome consists of two sister chromatids.
  • What stimulates cell division?
    Cell division is stimulated by growth factors and signals from the cell's environment.
  • What field of study involves the microscopic examination of chromosomes and cell division?
    Cytogenetics involves the microscopic examination of chromosomes and cell division.
  • The starting cell has how many chromosomes?
    The starting cell typically has 46 chromosomes in human somatic cells.
  • Which process produces new cells genetically identical to the original cell?
    Mitosis
  • Which type of cell division occurs during growth and repair of tissues?
    Mitosis occurs during growth and repair of tissues.
  • A parent cell contains 2n chromosomes. How many chromosomes will the daughter cell contain?
    The daughter cell will contain 2n chromosomes after mitosis.
  • What is a step that is not involved in bacterial cell division?
    Meiosis
  • If there are 32 sister chromatids in a normal somatic cell, how many chromosomes are present?
    There are 16 chromosomes present, as each chromosome consists of two sister chromatids.
  • What are the differences between cell division in animal and plant cells?
    Animal cells form a cleavage furrow during cytokinesis, while plant cells form a cell plate.
  • What are sister chromatids? When do they separate?
    Sister chromatids are identical copies of a chromosome connected by a centromere; they separate during anaphase of mitosis.
  • Do all cells replicate at the same rate?
    No, different types of cells replicate at different rates depending on their function and needs.
  • What is the name for 'splitting of the cell' or cell division?
    The splitting of the cell or cell division is called cytokinesis.
  • In which phase of the growth curve is the generation time measured?
    The generation time is measured during the exponential phase of the growth curve.
  • In which complete process are four new cells created from one original cell?
    Meiosis is the process where four new cells are created from one original cell.
  • An organism has 4 duplicated chromosomes. How many sister chromatids does it have?
    It has 8 sister chromatids, as each duplicated chromosome consists of two sister chromatids.
  • How many daughter cells are produced in mitosis?
    Two daughter cells are produced in mitosis.
  • Consider a diploid cell with 2n = 6. This cell is shown in which phase of cell division?
    The cell is shown in metaphase if the chromosomes are aligned at the equatorial plate.
  • Which type of cell division produces an exact copy of the cell?
    Mitosis produces an exact copy of the cell.
  • What is the role of kinetochores during cell division?
    They attach to spindle fibers
  • What process will produce new cells that are genetically identical to the original cell?
    Mitosis will produce new cells that are genetically identical to the original cell.