More
All Subjects
Biology
KS5 Year 12
Biological molecules
Biology: Biological molecules
KS5 Year 12
All Year Groups
KS2 Year 3
KS2 Year 4
KS2 Year 5
KS2 Year 6
KS3 Year 7
KS3 Year 8
KS3 Year 9
KS4 Year 10
KS4 Year 11
KS5 Year 12
KS5 Year 13
All Subjects
Maths
English language
Biology
Physics
Chemistry
Chapter Overview
Chapter Overview
Exam Board
Select an option
Practical skills
Ecosystems
Control systems
Origins of genetic variation
Modern genetics
Microbiology and pathogens
Energy for biological processes
Exchange and transport
Classification and biodiversity
Cells, viruses and reproduction of living things
Biological molecules
11 Lessons
66 Exercises
Biological molecules
Biological molecules
Carbohydrates: types, structure and function
Length
Overview
Learning Goals
Overview
Learn
The structure and function of lipids
Length
Overview
Learning Goals
Overview
Learn
The structure and function of proteins
Length
Overview
Learning Goals
Overview
Learn
Nucleic acids: DNA and RNA
Length
Overview
Learning Goals
Overview
Learn
DNA replication
Length
Overview
Learning Goals
Overview
Learn
DNA, genes and chromosomes
Length
Overview
Learning Goals
Overview
Learn
RNA, protein synthesis and the genetic code
Length
Overview
Learning Goals
Overview
Learn
Enzymes: activation energy, properties and structure
Length
Overview
Learning Goals
Overview
Learn
Factors affecting enzyme activity
Length
Overview
Learning Goals
Overview
Learn
Inorganic ions: iron, hydrogen, sodium and phosphate
Length
Overview
Learning Goals
Overview
Learn
The properties and functions of water
Length
Overview
Learning Goals
Overview
Learn
Popular Chapters in All Year Groups
Global challenges
Key concepts
Inheritance, variation and evolution
Practical skills
Exchange and transport
Biology practicals
Biological molecules
Homeostasis and response
Substance exchange
Genetics
Biodiversity and variation
Cells
Working scientifically
Microbiology and pathogens
Beta