Explain the stages of the cell cycle and their importance.

The cell cycle consists of interphase (G1, S, and G2 phases) and the mitotic phase (M phase). In G1, the cell grows and performs normal functions. In S, DNA is replicated, ensuring that each daughter cell gets a full set of chromosomes. In G2, the cell prepares for division by synthesizing proteins and organelles. The mitotic phase consists of mitosis, where the cell’s chromosomes are divided into two identical sets, followed by cytokinesis, which divides the cytoplasm. This process is essential for growth, repair, and reproduction of cells.

Related Questions:

  1. Give differences between meiosis I and meiosis II?
  2. Give the modifications of epidermal cells for:
  3. Explain the spindle in detail.
  4. What is crossing over?
  5. Explain the significance of the G0 phase in the cell cycle?
  6. What will be the difference in materials synthesized by cell A and cell B after the production of the two daughter cells?
  7. Why do epithelial cells of the skin divide continuously?
  8. In rapidly dividing cells, which phase of the cell cycle is reduced? Explain.
  9. What is the difference between cytokinesis in plant cells and animal cells?
  10. Both skin cells and cancerous cells divide rapidly. Why are cancerous cells harmful but skin cells are not?
  11. How do haploid organisms produce gametes?
  12. Down syndrome is due to an extra copy of chromosome 21. Why do people with Down syndrome have 47 chromosomes instead of the usual 46?
  13. What is the significance of the G1 phase?
  14. What is the role of spindle fibers in mitosis?
  15. What is the consequence of a cell not undergoing cytokinesis after mitosis?
  16. State the relationship between structure and functions of mesophyll cells, epidermal cells, neurons, muscles, RBCs and liver cells?
  17. What is a domain? Name the three domains of life.
  18. What are the bases of classification of life into domains?
  19. How can you differentiate between?
  20. Compare the two-kingdom, three-kingdom, and five-kingdom systems of classification.