NEET Exam > NEET Videos > Biology Class 11 > Cell Cycle & Cell Division Phases
Cell Cycle & Cell Division Phases Video Lecture | Biology Class 11 - NEET
|
181 videos|360 docs|149 tests
|
FAQs on Cell Cycle & Cell Division Phases Video Lecture - Biology Class 11 - NEET
| 1. What is the cell cycle and how is it regulated? |  |
Ans. The cell cycle refers to the sequence of events that occur in a cell leading to its division and the production of two daughter cells. It consists of interphase (G1, S, and G2 phases) and mitosis (prophase, metaphase, anaphase, and telophase). The cell cycle is regulated by various checkpoints, such as the G1, G2, and M checkpoints, that ensure the cell is ready to proceed to the next phase. These checkpoints monitor DNA integrity, cell size, and the presence of growth factors.
| 2. What are the phases of mitosis and what happens during each phase? | |
Ans. Mitosis is a process of cell division that occurs after the interphase. It consists of four phases: prophase, metaphase, anaphase, and telophase. During prophase, the chromatin condenses into chromosomes, the nuclear envelope breaks down, and the mitotic spindle forms. In metaphase, the chromosomes align at the cell's equator. Anaphase is characterized by the separation of sister chromatids, which are pulled towards opposite poles of the cell. Telophase involves the formation of two daughter nuclei, and the cytoplasm starts to divide.
| 3. What is the significance of the G1 phase in the cell cycle? | |
Ans. The G1 phase is the first phase of interphase, occurring before DNA synthesis (S phase). It is a critical phase as it determines whether the cell will proceed to divide or enter a non-dividing state called the G0 phase. During the G1 phase, the cell grows, synthesizes proteins, and replicates its organelles. It also undergoes a series of checkpoints that assess DNA damage, cell size, and nutrient availability. If these checkpoints are not passed, the cell may undergo apoptosis or enter the quiescent G0 phase.
| 4. How does cell division contribute to growth and repair in multicellular organisms? | |
Ans. Cell division is crucial for growth and repair in multicellular organisms. Through cell division, a single cell can give rise to two daughter cells, leading to an increase in the total number of cells in the organism. During growth, cell division allows for the development and enlargement of tissues and organs. In the case of repair, damaged or injured tissues can be regenerated through cell division. For example, when a cut occurs, nearby cells divide and fill the gap, facilitating the healing process.
| 5. What are the consequences of uncontrolled cell division? | |
Ans. Uncontrolled cell division can lead to the formation of tumors and cancer. When the normal regulatory mechanisms of the cell cycle fail, cells can divide excessively and form a mass of abnormal cells called a tumor. If the tumor is benign, it remains localized and does not spread to other parts of the body. However, if the tumor becomes malignant, it can invade nearby tissues and metastasize to distant sites, causing cancer. Understanding the regulation of cell division is crucial in preventing and treating cancer.
Related Exams
About this Video
|
4.85/5 Rating |
|
Dec 22, 2024 Last updated |
Video Description: Cell Cycle & Cell Division Phases for NEET 2024 is part of Biology Class 11 preparation.
The notes and questions for Cell Cycle & Cell Division Phases have been prepared according to the NEET exam syllabus.
Information about Cell Cycle & Cell Division Phases covers all important topics for NEET 2024 Exam.
Find important definitions, questions, notes, meanings, examples, exercises and tests below for Cell Cycle & Cell Division Phases.
Introduction of Cell Cycle & Cell Division Phases in English is available as part of our Biology Class 11 for NEET & Cell Cycle & Cell Division Phases in
Hindi for Biology Class 11 course. Download more important topics related with notes, lectures and mock test series for
NEET Exam by signing up for free.
Description
Video Lecture & Questions for Cell Cycle & Cell Division Phases Video Lecture | Biology Class 11 - NEET - NEET full syllabus preparation | Free video for NEET exam to prepare for Biology Class 11.
Information about Cell Cycle & Cell Division Phases
Here you can find the meaning of Cell Cycle & Cell Division Phases defined & explained in the simplest way possible.
Besides explaining types of Cell Cycle & Cell Division Phases theory, EduRev gives you an ample number of questions to practice Cell Cycle & Cell Division Phases tests,
examples and also practice NEET tests.
|
181 videos|360 docs|149 tests
|
|
Explore Courses for NEET exam
|
|
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
Related Searches
Exam
,Cell Cycle & Cell Division Phases Video Lecture | Biology Class 11 - NEET
,Cell Cycle & Cell Division Phases Video Lecture | Biology Class 11 - NEET
,Objective type Questions
,shortcuts and tricks
,MCQs
,ppt
,study material
,Cell Cycle & Cell Division Phases Video Lecture | Biology Class 11 - NEET
,Previous Year Questions with Solutions
,Sample Paper
,Viva Questions
,Extra Questions
,Semester Notes
,past year papers
,video lectures
,Summary
,Free
,mock tests for examination
,practice quizzes
,Important questions
;
Study Cell Cycle & Cell Division Phases on the App
Students of NEET can study Cell Cycle & Cell Division Phases alongwith tests & analysis from the EduRev app,
which will help them while preparing for their exam. Apart from the Cell Cycle & Cell Division Phases,
students can also utilize the EduRev App for other study materials such as previous year question papers, syllabus, important questions, etc.
The EduRev App will make your learning easier as you can access it from anywhere you want.
The content of Cell Cycle & Cell Division Phases is prepared as per the latest NEET syllabus.
|
© EduRev
|
Education Revolution
|
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup