The cell cycle of an average mammalian cell is illustrated below. G 1 start: t 1

Question

The cell cycle of an average mammalian cell is illustrated below. G 1 start: t 1 = 0 hours G1/S: t2 = 9.5 hours S/G2: t3 = 18.5 hours G2/M: t4 = 23.5 hours M/G1: t5 = 24 hours How long did it take for the above-illustrated mammalian cell to complete one cell cycle? How Ion did phase (M phase) last? What % of the total cell-cycle time does that constitute? What phase takes the longest time to complete during cell cycle and what % of the total cell-cycle time does that constitute to? Explain why you think this might be the longest phase of the cell cycle. How long was the S phase? What is happening in the cell during the S phase?

Explanation / Answer

1) the cell takes 24 hours to complete the cell cycle completely..!!

3) G1 is typically the longest phase of cell cycle. This is due to the the fact that G1 follows cell division in mitosis; G1 represents the first chance for new cells have to grow. Cells usually remain in G1 for about 10 hours of the 24 total hours of the cell cycle. It means 41.6% of time I spends to G1 phase...

4) the cells takes 5-6 hours to complete the stage.. The DNA content gets duplicated in the stage..!!

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