Question

1. during which phase does the cell actually separate into two individual daughter cells?

o prophase
o cytokinesis
o interphase
o metaphase

1. if you were to examine a sample of 1000 cells, in which of the phases listed below would you exp

o interphase
o metaphase
o anaphase
o telophase

1. upon examining a sample consisting of 100 cells, you find the following distribution of cell phases takes two hours, how long, on average, does the cell spend in prophase?

cell phase	number of cells
prophase	25
metaphase	8
anaphase	7
telophase	6

Explanation:

2.

Cytokinesis is the phase where the cell physically divides into two daughter cells. Prophase is for chromosome condensation, interphase is the growth phase, and metaphase is for chromosome alignment.

Interphase is the longest - lasting phase of the cell cycle. Cells spend most of their time in this phase growing, replicating DNA, and preparing for cell division.

Step1: Calculate the proportion of cells in prophase

The proportion $p$ of cells in prophase is calculated by dividing the number of cells in prophase by the total number of cells. The total number of cells is $n = 100$, and the number of cells in prophase is $n_{prophase}=25$. So $p=\frac{25}{100} = 0.25$.

Step2: Calculate the time spent in prophase

The total cell - cycle time is $T = 2$ hours. The time $t$ spent in prophase is the proportion of cells in prophase times the total cell - cycle time. So $t=p\times T=0.25\times2 = 0.5$ hours or 30 minutes.

Answer:

B. Cytokinesis

3.