Exploring the Mitosis Cell Cycle and Its Relation to Cancer

The video lecture covers the cell cycle, focusing on mitosis, its stages, and its role in cell growth and repair. It explains the differences between unicellular and multicellular reproduction, the importance of chromosomes, and how errors in the cell cycle can lead to cancer. The lecture emphasizes the need for understanding the cell cycle's complexity and the significance of checkpoints in preventing uncontrolled cell division.

What is the process called when a unicellular organism duplicates its DNA and splits in half?

• Binary fission

• Mitosis

• Meiosis

• Cytokinesis

Why is cell division important for multicellular organisms?

• To increase surface area

• For growth and repair

• To decrease volume

• For binary fission

What percentage of a cell's life is spent in interphase?

• 90%

• 100%

• 70%

• 50%

During which stage of interphase is DNA replicated?

• M

• G2

• S

• G1

What is a chromosome made up of?

• Two centromeres

• Two chromatids

• Two spindle fibers

• Two nuclei

What happens during prophase of mitosis?

• Chromosomes line up in the middle

• The cytoplasm divides

• Chromosomes condense and the nucleus disappears

• Chromatids are pulled to opposite poles

Which phase of mitosis involves chromosomes lining up along the middle of the cell?

• Anaphase

• Telophase

• Metaphase

• Prophase

What is the final stage of mitosis where the cytoplasm divides?

• Cytokinesis

• Anaphase

• Metaphase

• Prophase

What is cancer in relation to the cell cycle?

• Normal cell division

• Controlled cell growth

• Uncontrolled mitosis

• Apoptosis

What is apoptosis?

• Uncontrolled cell growth

• Programmed cell death

• DNA replication

• Chromosome condensation