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Cell Cycle and Cell Division Test - 4

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Cell Cycle and Cell Division Test - 4
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Weekly Quiz Competition
  • Question 1
    1 / -0

    M phase represents

    Solution

    The M Phase represents the phase when the actual cell division or mitosis occurs/starts during cell cycle

  • Question 2
    1 / -0

    In animal cells, the mitotic division is seen in

    Solution

    In animals, mitotic cell division is only seen in the diploid somatic cell since mitosis produces cells with same number of chromosomes as that of parents.

  • Question 3
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    The stage of inactivation of cell cycle due to non-availability of mitogens and energy rich compounds is called

    Solution

    It is the stage of cell cycle during which the cells remain metabolically active and do not divide due to absence of mitogens and energy producing compounds.

  • Question 4
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    Which of the following is true about meiosis?
  • Question 5
    1 / -0

    In animal cells, during G2 phase

    Solution

    During the G2 phase, proteins and RNA are synthesised in preparation for mitosis while cell growth continues.

  • Question 6
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    Each chromosome consists of ---- chromatid.

    Solution

    The resulting two identical copies of DNA are connected to each other at the centromere. Each copy is called a chromatid. A chromosome, before cell division is formed of one chromatid while it is formed of two chromatids after cell division.

  • Question 7
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    A stage in cell division is shown in the figure. Select the answer which gives the correct identification of the stage with its characteristics.

    (1) Late anaphase Chromosomes move away from equatorial plate, golgi complex not present
    (2) Cytokinesis Cell plate formed, mitochondria distributed between two daughter cells
    (3) Telophase Endoplasmic reticulum and nucleolus not reformed yet
    (4) Telophase Nuclear envelop reforms, golgi complex reforms
  • Question 8
    1 / -0

    How many chromosomes are present in each cell of  onion root tip?

    Solution

    Onion root tip cells have 16 chromosomes in each cell, same as the number of chromosomes in somatic cells.

  • Question 9
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    Colchicine is employed to diploid a haploid cell as it
  • Question 10
    1 / -0
    Which of the following states of cell cycle is attained when the cell has undergone differentiation?
  • Question 11
    1 / -0

    What is the average cell cycle span for a mammalian cell?

    Solution

    All the phases of cell cycle in mammalian cell are completed in 24 hours

  • Question 12
    1 / -0
    What is the correct sequence of prophase I of meiosis I?
  • Question 13
    1 / -0

    Plants show mitotic divisions in -------------

    Solution

    The plants can show mitotic divisions in both haploid and diploid cells due to alternation of generations in life cycle.

  • Question 14
    1 / -0
    Colchicine is a root extract of Colchicum autumnale. It inhibits cell cycle during the stage of
  • Question 15
    1 / -0
    Crossing over takes place at a stage between
  • Question 16
    1 / -0
    In which of the following phases of meiosis I does synapsis occur?
  • Question 17
    1 / -0
    Consider the following statements:

    Segmental allopolyploids are the polyploids in which

    1. the chromosomes are derived from different genomes
    2. the chromosomes form multivalents during meiosis
    3. the genomes involved are not quite different from one another

    Which of the statements given above are correct?
  • Question 18
    1 / -0
    The longest phase of a cell cycle in typical fast dividing eukaryotic cells which completes the cell cycle in approximate 24 hrs is
  • Question 19
    1 / -0
    How many chromonemata are present in metaphase and anaphase of cell cycle?
  • Question 20
    1 / -0

    In yeast the cell cycle is progressed through

    Solution

    Yeast can progress through the cell cycle in only about 90 minutes due to its simple organisation.

  • Question 21
    1 / -0

    The resting phase is otherwise called as

    Solution

    The interphase, though called the resting phase, is the time during which the cell is preparing for division by undergoing  cell growth  in an orderly manner. No divisional activities occur during this phase. Hence the name.

  • Question 22
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    Which one proceeds reformation of nuclear envelope during M-phase of cell cycle?

    Solution

    Before the completion of Mitosis reapperance of nuclear membrane takes place along with formation of nucleolus so that the cells bocemo separate enetities after cytokinesis but having same chromosome number as parent cells.

  • Question 23
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    In case of mitosis in 'Gnetum', which of the following is the correct explanation for the term 'karyochoresis'?
  • Question 24
    1 / -0

    In which stage, the cells remain metabolically active but do not proliferate?

    Solution

    In Go stage the cells are in a metabolically active state but do not divide unless there are some abnormal genes which reverses the same. This stage is also called quiscent stage. Examples human nerve cells.

  • Question 25
    1 / -0
    Which of the following processes takes place during the G2 phase of cell division?
  • Question 26
    1 / -0
    DNA molecules of each chromosome become double in
  • Question 27
    1 / -0

    S phase marks

    Solution

    S phase marks the phase of DNA replication and chromosome duplication. In this phase increase in the amount of DNA takes place. No synthesis of proteins or RNA takes place.

  • Question 28
    1 / -0
    Which statement is not true for karyotype?
  • Question 29
    1 / -0

    The number of chromosome and the amount of DNA are changed in

    Solution

    S phase marks the period during which DNA synthesis or replication takes place. During this time the amount of DNA per cell doubles. If the initial amount of DNA is denoted as 2C then it increases to 4C.and even in anaphase the chromosome numbers are changed.

  • Question 30
    1 / -0

    Karyokinesis is the

    Solution

    Cell division consists of karyokinesis and cytokinesis. During karyokinesis division of chromosomes takes place and during cytokinesis division of cytoplasm takes place. Ultimately the cell divides into two halves.

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