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प्रश्न
Between a prokaryote and a eukaryote, which cell has a shorter cell division time?
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उत्तर
Prokaryotic cells have shorter cell division times than eukaryotic cells. A typical eukaryotic cell cycle is illustrated by human cells in culture. These cells divide once approximately every 24 hours. In bacteria (E.coli) cell cycle is of 20 minutes.
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संबंधित प्रश्न
Distinguish cytokinesis from karyokinesis.
Cells in the quiescent stage (Go)
Name the stage of mitosis in which chromosomes are arranged on the equator of spindle:
Cell division cannot be stopped in which phase of the cell cycle?
Mitosis is characterised by ______.
Cells which are not dividing are likely to be at ______.
Which of the phases of cell cycle is of longest duration?
Which tissue of animals and plants exhibits meiosis?
Which part of the human body should one use to demonstrate stages in mitosis?
It is said that the one cycle of cell division in human cells (eukaryotic cells) takes 24 hours. Which phase of the cycle, do you think occupies the maximum part of cell cycle?
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:
Centromere splits and chromatids separate.
Name the phase of the cell cycle at which the following event occurs:
Pairing between homologous chromosomes takes place.
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:
Match List I with List II:
| List I | List II |
| A. M Phase | I. Proteins are synthesised |
| B. G Phase | II. Inactive phase |
| C. Quiescent stage | III. Interval between mitosis and initiation of DNA replication |
| D. G, Phase | IV. Equational division |
Choose the correct answer from the options given below:
