LOCKINBeta

Edexcel International A Level · Biology

Molecules, Diet, Transport and Health(Unit 1) revisionBuild it yourself.

Unit 1 covers 2 topics and 19 subtopics. Pick the ones you keep getting wrong and LOCKIN writes you an original exam-style paper, with a full mark scheme.

Build a Unit 1 paper — freeor practise Unit 1 questions one at a time →

What's in Unit 1

Every topic below can be selected on its own, or combined into one paper.

Molecules, Transport and Health

  • Water and its biological importance
  • Carbohydrates
  • Lipids
  • The heart and circulation
  • Haemoglobin and oxygen transport
  • Atherosclerosis and blood clotting
  • Cardiovascular disease and treatment
  • Interpreting health risk data

Usually 2–10 marks

Membranes, Proteins, DNA and Gene Expression

  • Gas exchange surfaces
  • Cell membrane structure
  • Osmosis and water potential
  • Passive and active transport
  • Amino acids and protein structure
  • Enzymes and their action
  • Nucleotides and DNA structure
  • DNA replication
  • Genetic code and protein synthesis
  • Mutations and cystic fibrosis
  • Genetic screening and ethics

Usually 2–10 marks

Other Biology units

Unit 2Unit 3Unit 4Unit 5Unit 6

Revising Unit 1?Build the paper you need.

Build a Unit 1 paper — free

Free to start · no card needed