The course

• 1

  Start here

  The SACE examination (30% of the subject): a 130-minute e-exam of 120 marks, with a multiple-choice Section 1 (10 questions from 2026) and Section 2 questions in parts. The timed checks are the course's own four-option practice at about the multiple-choice pace.

  Free: A tour of the biology course
• 2

  Topic 1: DNA and proteins

  5 of the 18 questions on each timed check

  DNA structure, chromosomes and replicationFree: From gene to protein: transcription, translation and protein shapeGene expression, epigenetics and mutationsPCR, electrophoresis, profiling and gene technology73 questions
• 3

  Topic 2: Cells as the basis of life

  5 of the 18 questions on each timed check

  Membranes, organelles and movement across membranesPhotosynthesis, respiration, ATP and cell metabolismBinary fission, mitosis, meiosis and the cell cycle86 questions
• 4

  Topic 3: Homeostasis

  4 of the 18 questions on each timed check

  Tolerance limits, stimulus-response and negative feedbackNeurons, nerve pathways and reflexesFree: Hormones, blood glucose, temperature and water balance69 questions
• 5

  Topic 4: Evolution

  4 of the 18 questions on each timed check

  The first cells, endosymbiosis and evidence of relatednessSpecies, gene pools, natural selection and speciationSuccession, genetic diversity and extinction74 questions