Year 11 Exam > Year 11 Notes > Biology for GCSE/IGCSE > DNA Structure
DNA Structure | Biology for GCSE/IGCSE - Year 11 PDF Download
Structure of a DNA Molecule: Extended
- DNA, or deoxyribonucleic acid, serves as the repository of genetic information for all living organisms.
- It comprises two intertwined strands forming a structure known as a double helix.
- Nucleotides are the building blocks of DNA, each composed of a sugar, a phosphate group, and a nitrogenous base.
- All nucleotides in DNA share the same phosphate and deoxyribose sugar, differing only in the base attached to them.
- There exist four distinct bases in DNA: Adenine (A), Cytosine (C), Thymine (T), and Guanine (G).
- Each base on one DNA strand pairs specifically with another base on the complementary strand, thereby maintaining the double helix structure.
- Adenine always pairs with Thymine (A-T), while Cytosine always pairs with Guanine (C-G).
- The phosphate and sugar components of nucleotides form the structural "backbone" of the DNA strand, akin to the sides of a ladder.
- The sequence of bases in DNA holds instructions for protein formation.
Question for DNA StructureTry yourself: What are the building blocks of DNA?View Solution
The document DNA Structure | Biology for GCSE/IGCSE - Year 11 is a part of the Year 11 Course Biology for GCSE/IGCSE.
All you need of Year 11 at this link: Year 11
|
110 videos|158 docs|34 tests
|
FAQs on DNA Structure - Biology for GCSE/IGCSE - Year 11
| 1. What is the structure of a DNA molecule? |  |
Ans. A DNA molecule is a double helix structure composed of two strands that are twisted around each other. Each strand is made up of a sequence of nucleotides containing a sugar-phosphate backbone and nitrogenous bases.
| 2. How is DNA organized within a cell? | |
Ans. DNA is organized into structures called chromosomes within the cell nucleus. Chromosomes are made up of long strands of DNA wrapped around proteins called histones.
| 3. What is the function of DNA in the body? | |
Ans. DNA contains the genetic information that determines an organism's traits and characteristics. It serves as a blueprint for the production of proteins and plays a crucial role in cell growth, development, and reproduction.
| 4. How is DNA replication carried out? | |
Ans. DNA replication is a process where a cell makes an identical copy of its DNA. It involves the separation of the DNA strands, the building of complementary strands by matching bases, and the proofreading and correction of errors.
| 5. How does the structure of a DNA molecule allow for genetic variation? | |
Ans. The specific sequence of nucleotides in DNA, along with its ability to replicate and undergo mutations, allows for genetic variation. This variation is essential for evolution and the diversity of species.
Related Exams
About this Document
|
Nov 22, 2024 Last updated |
Document Description: DNA Structure for Year 11 2024 is part of Biology for GCSE/IGCSE preparation.
The notes and questions for DNA Structure have been prepared according to the Year 11 exam syllabus. Information about DNA Structure covers topics
like Structure of a DNA Molecule: Extended and DNA Structure Example, for Year 11 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises and tests below for DNA Structure.
Introduction of DNA Structure in English is available as part of our Biology for GCSE/IGCSE
for Year 11 & DNA Structure in Hindi for Biology for GCSE/IGCSE course.
Download more important topics related with notes, lectures and mock test series for Year 11
Exam by signing up for free. Year 11: DNA Structure | Biology for GCSE/IGCSE - Year 11
Description
Full syllabus notes, lecture & questions for DNA Structure | Biology for GCSE/IGCSE - Year 11 - Year 11 | Plus excerises question with solution to help you revise complete syllabus for Biology for GCSE/IGCSE | Best notes, free PDF download
Information about DNA Structure
In this doc you can find the meaning of DNA Structure defined & explained in the simplest way possible. Besides explaining types of
DNA Structure theory, EduRev gives you an ample number of questions to practice DNA Structure tests, examples and also practice Year 11
tests
|
Explore Courses for Year 11 exam
|
|
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
Related Searches
mock tests for examination
,DNA Structure | Biology for GCSE/IGCSE - Year 11
,Summary
,video lectures
,Previous Year Questions with Solutions
,Important questions
,ppt
,MCQs
,Objective type Questions
,practice quizzes
,DNA Structure | Biology for GCSE/IGCSE - Year 11
,past year papers
,shortcuts and tricks
,Free
,DNA Structure | Biology for GCSE/IGCSE - Year 11
,Exam
,study material
,Sample Paper
,Semester Notes
,Extra Questions
,Viva Questions
;
Additional Information about DNA Structure for Year 11 Preparation
DNA Structure Free PDF Download
The DNA Structure is an invaluable resource that delves deep into the core of the Year 11 exam.
These study notes are curated by experts and cover all the essential topics and concepts, making your preparation more efficient and effective.
With the help of these notes, you can grasp complex subjects quickly, revise important points easily,
and reinforce your understanding of key concepts. The study notes are presented in a concise and easy-to-understand manner,
allowing you to optimize your learning process. Whether you're looking for best-recommended books, sample papers, study material,
or toppers' notes, this PDF has got you covered. Download the DNA Structure now and kickstart your journey towards success in the Year 11 exam.
Importance of DNA Structure
The importance of DNA Structure cannot be overstated, especially for Year 11 aspirants.
This document holds the key to success in the Year 11 exam.
It offers a detailed understanding of the concept, providing invaluable insights into the topic.
By knowing the concepts well in advance, students can plan their preparation effectively.
Utilize this indispensable guide for a well-rounded preparation and achieve your desired results.
DNA Structure Notes
DNA Structure Notes offer in-depth insights into the specific topic to help you master it with ease.
This comprehensive document covers all aspects related to DNA Structure.
It includes detailed information about the exam syllabus, recommended books, and study materials for a well-rounded preparation.
Practice papers and question papers enable you to assess your progress effectively.
Additionally, the paper analysis provides valuable tips for tackling the exam strategically.
Access to Toppers' notes gives you an edge in understanding complex concepts.
Whether you're a beginner or aiming for advanced proficiency, DNA Structure Notes on EduRev are your ultimate resource for success.
DNA Structure Year 11 Questions
The "DNA Structure Year 11 Questions" guide is a valuable resource for all aspiring students preparing for the
Year 11 exam. It focuses on providing a wide range of practice questions to help students gauge
their understanding of the exam topics. These questions cover the entire syllabus, ensuring comprehensive preparation.
The guide includes previous years' question papers for students to familiarize themselves with the exam's format and difficulty level.
Additionally, it offers subject-specific question banks, allowing students to focus on weak areas and improve their performance.
Study DNA Structure on the App
Students of Year 11 can study DNA Structure alongwith tests & analysis from the EduRev app,
which will help them while preparing for their exam. Apart from the DNA Structure,
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 Structure is prepared as per the latest Year 11 syllabus.
|
© EduRev
|
Education Revolution
|
Follow Us
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup