ASBiologyEdexcel A (SNAB)2. Genes and Health

2. Genes and Health (Edexcel A (SNAB) AS Biology)

Get ready for your Edexcel A (SNAB) AS Biology exams with our revision resources. Find everything you need to revise this topic, so you can go into your exam confident and prepared. Teachers and examiners write all our resources, and they’re designed specifically for each exam board. We regularly update them to match the latest syllabus, so you’ll only revise the most accurate, up-to-date information. Explore the collection below to get started.

2.1 Gas Exchange, Cell Membranes & Transport

  1. 2.1.1 Properties of Gas Exchange Surfaces
  2. 2.1.2 Fick's Law of Diffusion
  3. 2.1.3 The Mammalian Lung
  4. 2.1.4 Cell Membranes
  5. 2.1.5 Practical: Investigating Membrane Structure & Permeability
  6. 2.1.6 Diffusion & Facilitated Diffusion
  7. 2.1.7 Active Transport
  8. 2.1.8 Osmosis

2.2 Nucleic Acids

  1. 2.2.1 Nucleotides & Phosphodiester Bonds
  2. 2.2.2 DNA: Structure
  3. 2.2.3 RNA: Structure

2.3 Proteins

  1. 2.3.1 Transcription
  2. 2.3.2 Translation
  3. 2.3.3 Nature of the Genetic Code
  4. 2.3.4 Amino Acids & Peptide Bonds
  5. 2.3.5 Levels of Protein Structure
  6. 2.3.6 Globular Proteins: Structure & Function
  7. 2.3.7 Fibrous Proteins: Structure & Function
  8. 2.3.8 The Role of Enzymes
  9. 2.3.9 Mode of Enzyme Action
  10. 2.3.10 Practical: Investigating the Effect Enzyme and Substrate Concentrations

2.4 Inheritance

  1. 2.4.1 DNA Replication
  2. 2.4.2 Mutations
  3. 2.4.3 Inheritance: Key Terms
  4. 2.4.4 Pedigree Diagrams
  5. 2.4.5 Monohybrid Crosses
  6. 2.4.6 Chi-squared Test
  7. 2.4.7 Genetic Screening

2.1 Gas Exchange, Cell Membranes & Transport

  1. Multiple Choice & Structured Questions

2.2 Nucleic Acids

  1. Multiple Choice & Structured Questions

2.3 Proteins

  1. Multiple Choice & Structured Questions

2.4 Inheritance

  1. Multiple Choice & Structured Questions
Edexcel A (SNAB) AS Biology Past Papers