Why Cells Divide

Why do cells go through mitosis?

• to make food from sunlight

• to create proteins

• to get air into the cells

• to reproduce, grow and repair/replace

Before cells can divide, what happens to the DNA?

• It is replicated

• It increases in size

• It is divided in half

• It decreases in size

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• Cytokinesis

• Interphase

• Anaphase

• Metaphase

Why is the metaphase important?

• The DNA gets copied and the cell grows and develops

• The DNA lines up so exact copies can be pulled to each side

• The nuclear membrane disappears and the spindle fibers appear

• Two identical daughter cells are formed

What is Mitosis?

• structure that holds the sister chromatids together.

• the phase of the cell cycle in which the nucleus and its contents divide.

• the phase in which the cytoplasm and its contents divide.

• the period during the cell cycle of a cell’s growth and development.

What might happen if cytokinesis did not occur after mitosis?

• The cell becomes stronger because it has two sets of organelles.

• The cell becomes heavier because it has two sets of organelles.

• The cells would remain fused together and the new double cell would have duplicates of all parts.

• The cell becomes bigger because it has two sets of organelles.

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During the cell cycle, the cell’s nucleus and its contents divide to create two ____________.

• organelles

• organisms

• identical daughter cells

• organs

Why is the cell cycle so important?

• because it helps for growth and develop

• because it replaces cells that are old or damaged

• because it produces new cells

• All of the above

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What are the two stages of the Mitotic Phase?

• telophase and metaphase.

• mitosis and cytokinesis.

• anaphase and telophase

• telophase and anaphase.

Why do cells divide?

• To grow and develop

• To repair damaged tissues

• To reproduce

• All of the above

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