The course

1
Start here
The end-of-year examination: Section A, 40 multiple-choice questions (40 marks); Section B, short-answer and extended-answer questions (80 marks); 2 hours 30 minutes, 50% of the study score.
Free: A tour of the biology course
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Section 1: Nucleic acids, proteins and DNA tools
About 11 of the 40 questions on our multiple-choice practice papers
Free: Nucleic acids and gene expression Proteins and the secretory pathway DNA manipulation: CRISPR, PCR, gels and plasmids 45 questions
3
Section 2: Biochemical pathways
About 9 of the 40 questions on our multiple-choice practice papers
Biochemical pathways and enzymes Photosynthesis Cellular respiration and biotechnology 44 questions
4
Section 3: Immunity and disease
About 9 of the 40 questions on our multiple-choice practice papers
Barriers, innate immunity and antigens The adaptive immune response and immunity Disease challenges, vaccination and immunotherapy 42 questions
5
Section 4: Change over time and relatedness
About 8 of the 40 questions on our multiple-choice practice papers
Changes in gene pools Fossils, speciation and relatedness Human change over time 43 questions
6
Section 5: Key science skills
About 3 of the 40 questions on our multiple-choice practice papers
Key science skills and the examination 31 questions