Cell Cycle and Cell Differentiation

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?

• Cell division is a completely random process

• Once cells divide, they can never divide again

• The controls on cell growth and division can be turned on and off

• There is only a limited amount of DNA available to a given group of cells

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Which of the following happens when a cell divides?

• The cell's volume increases

• It becomes more difficult for the cell to get rid of wastes

• Each daughter cell receives its own copy of the parent cell's DNA

• It becomes more difficult for the cell to get enough oxygen and nutrients

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

• Mitosis (cell division)

• metaphase

• interphase

• differentiation

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During which phase in the cell cycle does mitosis happen?

• G1 phase

• G2 phase

• M phase

• S phase

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The image below shows cells that have a specialized purpose. The process where “generic”/unspecialized cells become specific/specialized is called:

• differentiation

• tissue formation

• cell theory

• mitosis

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What is cell differentiation?

• A separate equation that some cells use for respiration

• The theory that there are different cell types within the body of living organisms

• When stem cells become a specific type of cell and obtains its function

• A special type of cell division

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Which cells undergo cell differentiation?

• Skin cells

• Cancer cells

• Stem cells

• Normal Cells

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What is the process in which an unspecialized stem cell turns into a specialized body cell?

• DNA Replication

• Differentiation

• Respiration

• Genetic Modification

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• A

• B

• C

• D

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When during the cell cycle is a cell's DNA replicated?

• G1 phase

• G2 phase

• S phase

• M phase