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Cell Cycle Important Questions - Class 10 Science PDF Download
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| 1. What are the main stages of the cell cycle? |  |
Ans. The cell cycle consists of several main stages: Interphase (which includes G1, S, and G2 phases) and the Mitotic phase (M phase). During Interphase, the cell grows and prepares for division, while in the M phase, the cell divides into two daughter cells.
| 2. What happens during the S phase of the cell cycle? | |
Ans. During the S phase (Synthesis phase), DNA replication occurs. The cell synthesizes a complete copy of the DNA in its nucleus, ensuring that each daughter cell will have the same genetic information after cell division.
| 3. How is the cell cycle regulated? | |
Ans. The cell cycle is regulated by various proteins known as cyclins and cyclin-dependent kinases (CDKs). These proteins help control the progression of the cell cycle at checkpoints, ensuring that the cell only proceeds to the next stage when it is ready.
| 4. What is the significance of checkpoints in the cell cycle? | |
Ans. Checkpoints in the cell cycle are critical control mechanisms that ensure the integrity of the cell's DNA and overall health. They help prevent the division of damaged or unprepared cells, reducing the risk of cancer and other diseases.
| 5. How do cancer cells differ from normal cells in terms of the cell cycle? | |
Ans. Cancer cells often bypass the regulatory mechanisms of the cell cycle, leading to uncontrolled cell division. They may ignore checkpoints, proliferate rapidly, and can even evade apoptosis (programmed cell death), contributing to tumor growth and malignancy.
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Document Description: Visual Worksheet: Cell Cycle for Class 10 2026 is part of Science Class 10 preparation. The notes and questions for Visual Worksheet: Cell Cycle have been prepared according to the Class 10 exam syllabus. Information about Visual Worksheet: Cell Cycle covers topics like and Visual Worksheet: Cell Cycle Example, for Class 10 2026 Exam. Find important definitions, questions, notes, meanings, examples, exercises and tests below for Visual Worksheet: Cell Cycle.
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