Paper 1A
Multiple-choice questions
Syllabus and practice guide
A clear map of what the course covers, how it is assessed, and where real archive practice fits.
The short version
The course connects cells and biological molecules to plant and human systems, inheritance, variation, ecology, and biotechnology. Strong practice mixes recall with diagrams, data handling, experimental reasoning, and structured explanations.
Assessment at a glance
Biology now separates Paper 1 into multiple-choice and data or experimental-work sections, followed by a written Paper 2. The scientific investigation remains the internal-assessment component.
Multiple-choice questions
Data-based and experimental-work questions
Short-answer and extended-response questions at HL depth
Internal assessment report
The bank also contains legacy 2016–2024 Papers 1, 2, and 3. Current-paper timings and marks vary by subject and level; confirm them in the official guide linked below before planning a timed sitting.
Historical topic frequency
Bar length compares topic-tag counts across the covered years. The longest bar is the most frequently tagged topic in this archive.
This is observed historical frequency: the strongest archive-backed estimate of relative topic prevalence, not an official syllabus weighting or a guarantee of what appears next. A question can carry more than one topic label, so counts can overlap.
Paper practice
Each page explains the archive slice, then opens the same bank explorer with the exact paper filter applied.