CELL DIVISION

100% What is the primary purpose of cell division? The primary purpose of cell division is growth, repair, and reproduction. Which phase of the cell cycle is the longest? Interphase During which phase of mitosis do the chromosomes align at the center of the cell? Metaphase Which structure helps in the separation of chromosomes during mitosis? Spindle fibers What is the correct sequence of the stages of mitosis? Prophase, metaphase, anaphase, telophase Which process results in the production of gametes? Meiosis How many daughter cells are produced at the end of mitosis? Two How many chromosomes are present in human somatic cells after mitosis? 46 Which phase of mitosis is characterized by the nuclear envelope breaking down? Prophase What happens during cytokinesis? The cytoplasm divides, forming two separate cells. How does mitosis differ from meiosis? Mitosis produces genetically identical cells, while meiosis produces genetically unique cells. Which phase of meiosis is responsible for genetic variation? Prophase I What structure holds sister chromatids together? Centromere What is the function of the centrioles in cell division? They help organize the spindle fibers. How many daughter cells are produced at the end of meiosis? Four What is the chromosome number of human gametes? 23 At what stage do homologous chromosomes separate during meiosis? Anaphase I What is crossing over, and why is it important? It is the exchange of genetic material between homologous chromosomes, increasing genetic diversity. Which type of cell division occurs in prokaryotic cells? Binary fission Why is meiosis important for sexual reproduction? It ensures genetic diversity and maintains chromosome number across generations. Which type of cell undergoes mitosis? Somatic cells In which stage of meiosis do sister chromatids separate? Anaphase II What is a key difference between mitosis and binary fission? Binary fission occurs in prokaryotic cells, while mitosis occurs in eukaryotic cells. What is the result of uncontrolled cell division? Cancer Which type of reproduction requires meiosis? Sexual reproduction What is the significance of the G1 phase in the cell cycle? The cell grows and synthesizes necessary proteins for DNA replication. Which checkpoint in the cell cycle ensures DNA replication is complete? G2 checkpoint What would happen if cytokinesis did not occur? The cell would have multiple nuclei and fail to function properly. What is the primary purpose of mitosis? The primary purpose of mitosis is to produce two genetically identical daughter cells for growth, repair, and maintenance of an organism. Which of the following occurs during meiosis but not mitosis? A. DNA replication B. Crossing over C. Chromosome alignment at the metaphase plate D. Cytokinesis Crossing over During which phase of meiosis do homologous chromosomes separate? A. Prophase I B. Metaphase I C. Anaphase I D. Telophase II Anaphase I Which statement is true about meiosis? A. It results in the formation of diploid cells. B. It produces four genetically identical daughter cells. C. It reduces the chromosome number by half. D. It occurs in all somatic cells. It reduces the chromosome number by half. How does genetic variation occur in meiosis? A. Mutation during interphase B. Crossing over in prophase I and independent assortment in metaphase I C. DNA replication in S phase D. Cytokinesis at the end of telophase II Crossing over in prophase I and independent assortment in metaphase I What is the end result of mitosis? Two diploid daughter cells identical to the parent cell. Which of the following correctly compares mitosis and meiosis? A. Mitosis produces four cells, while meiosis produces two. B. Mitosis creates genetically diverse cells, while meiosis creates identical cells. C. Mitosis occurs in somatic cells, while meiosis occurs in gametes. D. Mitosis involves two rounds of division, while meiosis involves one. Mitosis occurs in somatic cells, while meiosis occurs in gametes. Why is meiosis important for sexual reproduction? It ensures genetic diversity and maintains a stable chromosome number across generations. Which stage of meiosis is responsible for creating haploid cells? A. Anaphase I B. Metaphase II C. Telophase II D. Prophase I Telophase II Which of the following describes a key difference between mitosis and meiosis? A. Mitosis occurs only in reproductive cells, while meiosis occurs in all cells. B. Mitosis results in diploid cells, while meiosis results in haploid cells. C. Mitosis occurs in two rounds of division, while meiosis occurs in one. D. Mitosis leads to genetic variation, while meiosis produces identical cells. Mitosis results in diploid cells, while meiosis results in haploid cells. What happens during crossing over? Homologous chromosomes exchang