GCSE Biology - What is DNA? (Structure and Function of DNA)

⭐️ https://www.cognito.org/ ⭐️

** WHAT'S COVERED **
1. The basic structure of DNA.
2. The components of a nucleotide.
Phosphate group.
Sugar molecule.
One of four bases: Adenine, Thymine, Cytosine, or Guanine.
3. The formation of the sugar-phosphate backbone.
4. Complementary base pairing.
5. The concept of the genetic code.
How the sequence of bases forms the code.
Definition of a gene.
6. How DNA codes for proteins.
7. Examples of protein functions.

** EXAM BOARD INFO **
AQA - Separate/triple science only
IGCSE Edexcel - Separate/triple science and higher tier only
Edexcel - Everything is relevant to your course!
OCR 21st Century - Separate/triple science and higher tier only
OCR Gateway - Separate/triple science only

** CHAPTERS **
0:00 Introduction to DNA Structure
0:54 DNA is a Polymer
1:06 Nucleotides: Phosphate, Sugar & Base
1:32 The Four Bases (A, T, C, G)
1:54 Sugar-Phosphate Backbone
2:38 Complementary Base Pairing (A-T, C-G)
4:12 Genes & The Genetic Code
4:52 How DNA Codes for Proteins
5:32 Protein Functions

** PLAYLISTS **
   • GCSE Maths (9-1)  

   • GCSE Biology (9-1)  

   • GCSE Chemistry (9-1)  

   • GCSE Physics (9-1)  

   • Alevel Biology  

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