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What is G0 (quiescent phase) of cell cycle?

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प्रश्न

What is G0 (quiescent phase) of cell cycle?

संक्षेप में उत्तर
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उत्तर

  • The G0 phase occurs when the cell cycle is inactivated because mitogens and substances high in energy are not available.
  • At this stage, cells still have an active metabolism but stop proliferating, meaning they don't grow or differentiate unless the organism requires them to.
  • For instance, chordate nerve and heart cells are always in the G0 phase.
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अध्याय 10: Cell Cycle and Cell Division - EXERCISES [पृष्ठ १२९]

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एनसीईआरटी Biology [English] Class 11
अध्याय 10 Cell Cycle and Cell Division
EXERCISES | Q 4. | पृष्ठ १२९

संबंधित प्रश्न

Distinguish cytokinesis from karyokinesis.


Why is mitosis called equational division?


Name the phase of the cell cycle at which the following event occurs:

Crossing over between homologous chromosomes takes place.


Most cytogenic activities occur during


Name the stage of mitosis in which chromosomes are arranged on the equator of spindle:


The fruit fly has 8 chromosomes (2n) in each cell. During the interphase of Mitosis if the number of chromosomes in G1 phase is 8, what would be the number of chromosomes after the S phase?


The centriole undergoes duplication during ______


Cell division cannot be stopped in which phase of the cell cycle?


Mitosis is characterised by ______.


Between a prokaryote and a eukaryote, which cell has a shorter cell division time?


Which tissue of animals and plants exhibits meiosis?


While examining the mitotic stage in a tissue, one finds some cells with 16 chromosomes and some with 32 chromosomes. What possible reasons could you assign to this difference in chromosome number. Do you think cells with 16 chromosomes could have arisen from cells with 32 chromosomes or vice versa?


Mitosis results in producing two cells which are similar to each other. What would be the consequence if the following irregularities occur during mitosis?

Duplication of DNA does not occur


Name the phase of the cell cycle at which the following event occurs:

Chromosomes are moved to spindle equator.


Spindle fibers attach to kinetochores of chromosomes during ______.


Statement I: During GO phase of cell cycle, the cell is metabolically inactive.

Statement II: The centrosome undergoes duplication during S phase of interphase.

In the light of the above statements, choose the most appropriate answer from the options given below:


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