Controlling Cell Growth

The two main stages of cell division are called

• mitosis and cytokinesis.

• the M phase and the S phase.

• mitosis and interphase.

• synthesis and cytokinesis.

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All of the following are problems that growth causes for cells EXCEPT

• more demands on DNA

• excess oxygen

• obtaining enough food

• expelling wastes

Cancer is a disorder in which some cells have lost the ability to control their

• surface area.

• growth rate.

• size.

• spindle fibers.

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Why are stem cells important?

• They have specialized DNA.

• They are incapable of becoming cancer cells.

• They have the potential to develop into other cell types.

• They have the potential to undergo cell division.

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The rate at which wastes are produced by a cell partially depends on the cell's

• surface area.

• ratio of surface area to volume.

• type of membrane.

• volume.

During normal mitotic cell division, a parent cell that has four chromosomes will produce two daughter cells, each containing

• two chromosomes.

• four chromosomes.

• eight chromosomes.

• sixteen chromosomes.

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Which of the following explains why normal cells grown in a petri dish tend to stop growing once they have covered the bottom of the dish?

• Contact with other cells stops cell growth.

• The cells lack cyclin.

• The petri dish inhibits cell growth.

• Most cells grown in petri dishes have a defective p53.

Which of the following represents the phases of mitosis in their proper sequence?

• interphase, prophase, metaphase, anaphase, telophase

• interphase, prophase, metaphase, telophase

• prophase, anaphase, metaphase, telophase

• prophase, metaphase, anaphase, telophase

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When during the cell cycle are chromosomes visible?

• only during cell division

• only during interphase

• only when they are being replicated

• only during the G1 phase

The process by which a cell divides into two daughter cells is called

• cell division.

• metaphase.

• interphase.

• mitosis.

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