Upon examining a sample consisting of 100 cells, you find the following distribution of cell phases. if you know that the cell cycle for this type of cell takes two hours, how long, on average, does the cell spend in prophase?

8 minutes
16 minutes
22 minutes
30 minutes

In this exercise, we have to use the total time and divide it by your quarter, thus:

30 minutes, letter D.

There are 100 cells and 25 of them, or 1/4 of the entire sample, are in prophase. From this you can conclude that these  cycle in prophase. The length of the cell cycle for these cells is 2 hours or 120 minutes. Therefore, the cells spen d about 30 minutes.

See more about cell phases at link

30 minutes is the correct answer. Altho you must know it shouldn't be. the lengths of different stages in the cell cycle very depending on the type of cell.

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