3.6 Mitosis and Cell Cycle

Front

What is a chromosome?

Back

A chromosome is a long, thread-like structure made of DNA and proteins that contains genetic information.

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NGSS.HS-LS1-1

NGSS.HS-LS3-1

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What are sister chromatids?

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Sister chromatids are two identical copies of a chromosome, joined together by a centromere.

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NGSS.HS-LS1-4

Front

What is the function of the centromere?

Back

The centromere is the region of a chromosome where sister chromatids are joined and where the spindle fibers attach during cell division.

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NGSS.HS-LS1-4

Front

List the stages of mitosis in order.

Back

The stages of mitosis in order are: prophase, metaphase, anaphase, telophase.

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NGSS.HS-LS1-4

Front

What occurs during prophase?

Back

During prophase, the chromatin condenses into visible chromosomes, the nuclear envelope breaks down, and the spindle apparatus begins to form.

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NGSS.HS-LS1-4

Front

What happens during metaphase?

Back

During metaphase, chromosomes align at the cell's equatorial plane, and spindle fibers attach to the centromeres.

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NGSS.HS-LS1-4

Front

Describe anaphase.

Back

Anaphase is the stage of mitosis where sister chromatids are pulled apart to opposite poles of the cell.

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NGSS.HS-LS1-4

Front

What is telophase?

Back

Telophase is the final stage of mitosis where the chromosomes de-condense, the nuclear envelope re-forms, and the cell prepares to divide.

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NGSS.HS-LS1-4

Front

What is interphase?

Back

Interphase is the phase of the cell cycle where the cell prepares for division, including DNA replication and growth.

Front

What is the role of centrioles in cell division?

Back

Centrioles help organize the spindle fibers that separate chromosomes during cell division.

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NGSS.HS-LS1-4