Chapter 9, Problem 16A

Summary Introduction

To write:

Correct vocabulary terminthe given concept map.

Introduction:

Cells reproduce by a cycle of growing and dividing called the cell cycle. There are three main stages of a cell cycle; interphase, mitosis and cytokinesis.A cell spends most of the time in interphase. It is the stage in which a cell grows, carries out cellular activities and replicates. The next stage is mitosis in which cell’s nucleus and nuclear material divides. The last stage is cytokinesis in which the cytoplasm of the cell divided creating a new cell.

Answer to Problem 16A

Metaphase

Explanation of Solution

The second stage in a cell cycle is mitosis in which cell’s nucleus and nuclear material divides. In this stage the replicated genetic material separates and the cell prepares to split into two cells. There are four stages in mitosis; prophase, metaphase, anaphase and telophase.

Metaphase- In this second stage of mitosis, the sister chromatids attach to mitotic spindle and are pulled by motor proteins along the spindle apparatus towards the center of the cell. They align along the equator of the cell. This ensures that the new cells have accurate copies of the chromosomes. This stage is the shortest stage of mitosis.