Cell Cycle (Mitosis) Quiz25f

What is the phase of Mitosis called when the sister chromatids separate and move to opposite ends of the cell?

• anaphase
• cytokinesis
• metaphase
• telophase
• prophase

Which of the following is a factor that can stop normal cells from growing?

• contact with other cells
• growth factors
• a cut in the skin
• cyclin that has been taken from a cell in mitosis

The structure labeled B in the figure below is called the

• centromere.
• centrioles
• sister chromatids.
• spindles

Which figure below is the phase where the chromatin condenses into chromosomes, the centrioles separate, and a spindle begins to form, the nuclear envelope breaks down?

• A
• B
• C
• D

Which figure below is anaphase?

• A
• B
• C
• D

Cells grown in a petri dish tend to divide until they form a thin layer covering the bottom of the dish. If cells are removed from the middle of the dish, the cells bordering the open space will begin dividing until they have filled the empty space. What does this experiment show?

• When cells come into contact with other cells, they stop growing.
• The controls on cell growth and division can be turned on and off.
• Cell division can be regulated by factors outside the cell.
• all of the above

As a cell grows and gets larger, it_____________________.

• places more demands on its DNA.
• uses up food and oxygen more quickly.
• has more trouble moving enough materials across its cell membrane.
• all of the above

Which figure below is telophase?

• A
• B
• C
• D

What is the role of the spindle during mitosis?

• It helps separate the chromosomes.
• It breaks down the nuclear membrane.
• It duplicates the DNA.
• It makes the chromosomes visible.

______________________series of events that cells go through as they grow and divide.

• Cell Cycle
• Cytokinesis
• Mitosis
• Telophase