NEET Exam > NEET Videos > Biology Class 11 > Cell Cycle & Cell Division
Cell Cycle & Cell Division Video Lecture | Biology Class 11 - NEET
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FAQs on Cell Cycle & Cell Division Video Lecture - Biology Class 11 - NEET
| 1. What is the cell cycle and cell division? |  |
Ans. The cell cycle refers to the series of events that take place in a cell leading to its division and replication. It consists of interphase (G1, S, and G2 phases) and the mitotic phase (prophase, metaphase, anaphase, and telophase), followed by cytokinesis. Cell division, on the other hand, is the process by which a parent cell divides into two or more daughter cells.
| 2. What is the purpose of the cell cycle and cell division? | |
Ans. The cell cycle and cell division play crucial roles in growth, development, and repair of organisms. The cell cycle allows cells to duplicate their genetic material and ensure accurate distribution to daughter cells. Cell division allows for the growth of organisms by increasing cell numbers, as well as the replacement of damaged or old cells.
| 3. How is the cell cycle regulated? | |
Ans. The cell cycle is tightly regulated to prevent uncontrolled cell growth and division. Regulatory proteins, such as cyclins and cyclin-dependent kinases (CDKs), control the progression through the cell cycle phases. These proteins help in coordinating DNA replication, repair, and cell division. Additionally, checkpoints at various stages of the cell cycle ensure that damaged DNA is repaired or the cell undergoes programmed cell death (apoptosis).
| 4. What are the consequences of cell cycle dysregulation? | |
Ans. Dysregulation of the cell cycle can have severe consequences. Uncontrolled cell division can lead to the formation of tumors and cancer. On the other hand, defects in cell cycle regulation can result in cell death or developmental abnormalities. Therefore, maintaining precise control over the cell cycle is essential for proper cell function and overall organism health.
| 5. Are there any factors that can influence the cell cycle? | |
Ans. Yes, several factors can influence the cell cycle. External factors such as growth factors, hormones, and environmental conditions can affect the progression through the cell cycle. Additionally, internal factors such as DNA damage, DNA replication errors, and genetic mutations can also impact the cell cycle. These factors can disrupt the normal regulation of the cell cycle and lead to various cellular abnormalities and diseases.
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Dec 22, 2024 Last updated |
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