Exploring Cell Cycle and Mitosis

What is the first stage of the cell cycle?

• Mitosis

• Interphase

• Cytokinesis

• Prophase

During which phase of mitosis do the chromosomes line up in the middle of the cell?

• Anaphase

• Telophase

• Metaphase

• Prophase

Which structure holds the two sister chromatids together?

• Centromere

• Spindle fiber

• Chromatin

• Nucleus

What is the role of spindle fibers during cell division?

• They replicate DNA.

• They separate chromosomes.

• They form the cell membrane.

• They dissolve the nuclear envelope.

Which of the following is the correct order of the phases of mitosis?

• Prophase, Metaphase, Anaphase, Telophase

• Metaphase, Anaphase, Telophase, Prophase

• Anaphase, Telophase, Prophase, Metaphase

• Telophase, Prophase, Metaphase, Anaphase

Explain why DNA replication is important before a cell divides.

• It ensures that each daughter cell has a complete set of genetic information.

• It helps in the formation of spindle fibers.

• It allows the cell to grow larger.

• It prevents the cell from undergoing apoptosis.

Tags

NGSS.HS-LS1-4

Describe the changes that occur to the nuclear envelope during mitosis.

• It remains intact throughout mitosis.

• It breaks down during prophase and re-forms during telophase.

• It dissolves during metaphase and reappears during anaphase.

• It thickens during anaphase and disappears during telophase.

Tags

NGSS.HS-LS1-4

How do spindle fibers contribute to the equal distribution of chromosomes during cell division?

• They attach to the centromeres and pull sister chromatids apart.

• They form a barrier that prevents chromosome movement.

• They replicate the DNA to ensure equal distribution.

• They dissolve the nuclear envelope to release chromosomes.

Compare and contrast the processes of mitosis and cytokinesis.

• Mitosis involves the division of the cytoplasm, while cytokinesis involves the division of the nucleus.

• Mitosis involves the division of the nucleus, while cytokinesis involves the division of the cytoplasm.

• Both mitosis and cytokinesis involve the division of the nucleus.

• Both mitosis and cytokinesis involve the division of the cytoplasm.

Tags

NGSS.HS-LS1-4

Predict what might happen if spindle fibers fail to form during cell division.

• Chromosomes would not replicate.

• Chromosomes would not align or separate properly, leading to cell division errors.

• The nuclear envelope would not dissolve.

• The cell would immediately enter cytokinesis.

Tags

NGSS.HS-LS1-4