Cell Cycle and Mitosis

Multiple Choice

Why is cellular reproduction significant for living organisms?

• It allows organisms to grow and repair tissues.

• It helps organisms move faster.

• It increases the number of organelles in a cell.

• It decreases the need for nutrients.

Open Ended

What are some difficulties a cell faces as it increases in size?

Multiple Choice

What is the main difference between chromosomes and chromatin in a cell?

• Chromosomes are relaxed forms of DNA, while chromatin is condensed.

• Chromosomes contain genetic material passed from generation to generation, while chromatin is the relaxed form of DNA in the nucleus.

• Chromatin contains genetic material passed from generation to generation, while chromosomes are relaxed forms of DNA.

• Chromosomes are only found in the nucleus, while chromatin is found throughout the cell.

Open Ended

Explain why mitosis is important for multicellular organisms. Use an example to support your answer.

Multiple Select

Which of the following statements about prophase in mitosis is/are correct?

• The genetic material condenses and chromosomes become visible.

• The spindle begins to form outside the nucleus.

• Chromosomes line up at the center of the cell.

• Duplicated chromosomes are attached at the centromere.

Open Ended

Describe what happens to chromosomes during metaphase of mitosis.

Multiple Choice

Based on the diagram, what is the function of spindle fibers during mitosis?

• They attach to chromosomes and help separate them.

• They form the nuclear envelope.

• They duplicate the DNA.

• They condense the chromatin.

Multiple Choice

Which phase of mitosis is characterized by the separation of sister chromatids and their movement to opposite ends of the cell?

• Prophase

• Metaphase

• Anaphase

• Telophase

Multiple Choice

During which phase of mitosis do chromosomes begin to spread out into a tangle of chromatin?

• Prophase

• Metaphase

• Anaphase

• Telophase

Open Ended

Explain the main differences between cytokinesis in plant cells and animal cells.

Multiple Select

Which of the following statements about apoptosis are correct?

• It is a process of programmed cell death.

• It is triggered by uncontrolled cell division.

• It leads to the self-destruction of a cell.

• It is the same as necrosis.

Open Ended

Describe how cancer cells differ from normal cells in terms of cell cycle regulation and tumor formation.

Multiple Choice

Which of the following best explains how cancer cells affect the functioning of organs as they spread?

• They absorb nutrients needed by other cells and block nerve connections.

• They increase the oxygen supply to organs.

• They help other cells grow faster.

• They repair damaged tissues.

Open Ended

Explain how defects in genes can lead to cancer and describe at least two environmental factors that can contribute to the development of cancer.

Open Ended

What are some questions you still have about cellular growth or cell division after today's lesson?

Open Ended

Summarize one key reason why cells need to divide as they grow larger.