Cell Division

Multiple Choice

Which of the following is NOT a function of cell division in living organisms?

• Tissue replacement

• Specialisation of cells into tissues

• Production of energy

• Organismal growth

Open Ended

Why is cell division considered essential for the growth and development of multicellular organisms?

Multiple Choice

What is the role of histone proteins in the formation of chromosomes during cell division?

• They help DNA form a compact structure called chromatin.

• They break down DNA into smaller fragments.

• They replicate DNA during cell division.

• They transport chromosomes to daughter cells.

Multiple Select

Which of the following statements about kinetochores are correct?

• Kinetochores connect chromosomes to microtubule filaments.

• Kinetochores are responsible for DNA replication.

• Kinetochores regulate chromosome movement via motor proteins.

• Kinetochores are found only in prokaryotic cells.

Open Ended

Explain the significance of the S phase during interphase in the cell cycle.

Multiple Choice

Which process produces cells with half the number of chromosomes as the parent cell?

• Mitosis

• Meiosis

• Cytokinesis

• Interphase

Open Ended

Compare and contrast the outcomes of mitosis and meiosis in terms of chromosome number and genetic identity of the resulting cells.

Multiple Choice

Which of the following best describes the main difference between cytokinesis in animal cells and plant cells?

• Animal cells form a cleavage furrow, while plant cells form a cell plate through vesicle fusion.

• Animal cells form a cell plate, while plant cells form a cleavage furrow.

• Both animal and plant cells use vesicle formation to divide.

• Both animal and plant cells use a contractile ring to pinch the membrane.

Multiple Select

Which of the following statements about the outcomes of cytokinesis are correct?

• Most cells divide their cytoplasm equally, resulting in two similar daughter cells.

• Some cells undergo unequal cytokinesis, with one cell retaining most organelles.

• Unequal cytokinesis in humans ensures the ovum has enough resources for development.

• In yeast, daughter cells develop as an outgrowth called budding.

Open Ended

Explain why mitosis is important for multicellular organisms. Provide at least two reasons based on the process and outcomes of mitosis.

Multiple Choice

Which phase of mitosis is characterized by chromosomes aligning at the equator of the cell?

• Prophase

• Metaphase

• Anaphase

• Telophase

Multiple Select

Which of the following events occur during anaphase of mitosis?

• Cohesins are removed from chromatids.

• Spindle fibres contract and pull sister chromatids apart.

• Chromatids move to the poles as separate chromosomes.

• Nuclear membrane reforms around chromosomes.

Multiple Choice

Which phase of mitosis is characterized by chromosomes aligning in the center of the cell?

• Prophase

• Metaphase

• Anaphase

• Telophase

Multiple Select

Which of the following statements about cancer and tumors are correct?

• Errors in mitotic divisions can lead to cancer.

• Primary tumors invade neighboring tissues.

• Secondary tumors are benign.

• Metastasis describes the spread of cancerous tissue to another location.

Multiple Choice

During which phase of meiosis does crossing over of genetic information occur?

• Meiosis I

• Meiosis II

• S Phase

• Telophase

Open Ended

Explain the difference between the first and second divisions in meiosis, including what is separated in each division and the resulting chromosome number.

Multiple Select

Which of the following are true about Meiosis II?

• It separates sister chromatids.

• It results in four haploid daughter cells.

• It is identical to mitosis in function.

• It doubles the chromosome number.

Multiple Choice

Which of the following best describes the main difference between Meiosis I and Meiosis II?

• Meiosis I separates bivalents, while Meiosis II separates chromatids.

• Meiosis I separates chromatids, while Meiosis II separates bivalents.

• Both Meiosis I and II separate chromatids.

• Both Meiosis I and II separate bivalents.

Open Ended

Explain how meiosis contributes to genetic variation in offspring.

Multiple Choice

Which of the following events occurs during prophase I of meiosis and contributes to genetic diversity?

• Crossing over between non-sister chromatids

• Random assortment of homologous chromosomes

• Separation of chromatids

• Formation of gametes

Multiple Select

Select all statements that are true about non-disjunction.

• It can occur during anaphase I or II of meiosis.

• It results in gametes with missing or extra chromosomes.

• It only affects homologous chromosomes in anaphase II.

• It can lead to conditions such as trisomy.

Open Ended

How can Down syndrome be identified prenatally, and what chromosomal abnormality is associated with it?

Open Ended

What questions do you still have about the process of cell division or its role in living organisms?

Open Ended

Summarize the main reasons why cell division is important for living organisms.

Open Ended

How are the processes of DNA replication, cancer development, the reproductive system, and natural selection interconnected in the context of meiosis and genetic variation?