NEET Exam > NEET Videos > Biology Class 12 > DNA replication
DNA replication Video Lecture | Biology Class 12 - NEET
|
78 videos|276 docs|174 tests
|
FAQs on DNA replication Video Lecture - Biology Class 12 - NEET
| 1. What is the process of DNA replication? |  |
Ans.DNA replication is the biological process by which a cell duplicates its DNA, resulting in two identical copies. It involves unwinding the double helix structure of the DNA molecule, separating the two strands, and synthesizing new complementary strands using existing ones as templates. Key enzymes like DNA helicase, DNA polymerase, and ligase play crucial roles in this process.
| 2. What are the key enzymes involved in DNA replication? | |
Ans.The key enzymes involved in DNA replication include DNA helicase, which unwinds the DNA double helix; DNA polymerase, which synthesizes new DNA strands by adding nucleotides complementary to the template strand; and DNA ligase, which joins Okazaki fragments on the lagging strand to create a continuous strand.
| 3. What are the differences between leading and lagging strands in DNA replication? | |
Ans.The leading strand is synthesized continuously in the same direction as the replication fork, allowing for rapid elongation. In contrast, the lagging strand is synthesized discontinuously in short segments called Okazaki fragments, which are later joined together by DNA ligase. This occurs because the lagging strand is oriented in the opposite direction to the movement of the replication fork.
| 4. Why is DNA replication considered semi-conservative? | |
Ans.DNA replication is termed semi-conservative because each new DNA molecule consists of one original (parental) strand and one newly synthesized strand. This means that during replication, the two strands of the original DNA double helix separate, and each serves as a template for the formation of a new complementary strand, ensuring genetic continuity.
| 5. How do errors in DNA replication lead to mutations? | |
Ans.Errors during DNA replication can occur due to mispairing of nucleotides or slippage during strand synthesis. If these errors are not corrected by proofreading mechanisms of DNA polymerase or DNA repair systems, they can become permanent mutations in the DNA sequence. Such mutations can affect gene function and contribute to various genetic disorders or diseases.
About this Video
|
5K Views |
|
4.74/5 Rating |
|
Dec 23, 2024 Last updated |
Video Description: DNA replication for NEET 2024 is part of Biology Class 12 preparation.
The notes and questions for DNA replication have been prepared according to the NEET exam syllabus.
Information about DNA replication covers all important topics for NEET 2024 Exam.
Find important definitions, questions, notes, meanings, examples, exercises and tests below for DNA replication.
Introduction of DNA replication in English is available as part of our Biology Class 12 for NEET & DNA replication in
Hindi for Biology Class 12 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 DNA replication Video Lecture | Biology Class 12 - NEET - NEET full syllabus preparation | Free video for NEET exam to prepare for Biology Class 12.
Information about DNA replication
Here you can find the meaning of DNA replication defined & explained in the simplest way possible.
Besides explaining types of DNA replication theory, EduRev gives you an ample number of questions to practice DNA replication tests,
examples and also practice NEET tests.
|
78 videos|276 docs|174 tests
|
Video Timeline
|
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
DNA replication Video Lecture | Biology Class 12 - NEET
,Important questions
,Semester Notes
,past year papers
,Free
,mock tests for examination
,Sample Paper
,study material
,Objective type Questions
,practice quizzes
,MCQs
,Exam
,Viva Questions
,Extra Questions
,shortcuts and tricks
,Previous Year Questions with Solutions
,ppt
,DNA replication Video Lecture | Biology Class 12 - NEET
,DNA replication Video Lecture | Biology Class 12 - NEET
,Summary
,video lectures
;
Study DNA replication on the App
Students of NEET can study DNA replication alongwith tests & analysis from the EduRev app,
which will help them while preparing for their exam. Apart from the DNA replication,
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 DNA replication 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